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The cylinder head is usually cast in one piece from iron, from iron alloyed with other metals, or from aluminum alloy. Aluminum has the advantage of combining lightness with high heat conductivity .that is, an aluminum head tends to run cooler, other factors being equal. There are two types of head, L head and I head. Cylinder head contains water jackets for cooling in the assembled engine, these water jackets are connected through openings to the assembled engine. These water jackets are connected through openings to the cylinder-block water jackets. Which topic is fit with the paragraph? A. Cylinder head B. Cylinder block C. Cylinder gaskets
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【多选题】How is cellulose syntheszied in plants?
A.
The complex enzymatic machinery that assembles cellulose chains spans the plasma membrane, with one part on the cytoplasmic side positioned to bind the substrate, UDP-glucose, and elongate the chains, and another part extending to the outside, responsible for exporting the cellulose molecules to the extracellular space.
B.
Freeze-fracture electron microscopy shows a cellulose synthesis complex, or rosette, composed of six large particles arranged in a regular hexagon with a diameter of about 30 nm. Several proteins, including the catalytic subunit of cellulose synthase, make up this structure. Each of the six particles of the rosette most likely contains three cellulose synthase molecules, each synthesizing a single cellulose chain.
C.
In one working model of cellulose synthesis, cellulose chains are initiated by the transfer of a glucose residue from UDP-glucose to a “primer” glucose already bound to cellulose synthase on the cytoplasmic side of the plasma membrane, to form a disaccharide. As addition of further glucose residues lengthens the chain, it is extruded through a channel formed by the transmembrane helices of cellulose synthase and, on the outer suce of the plasma membrane, joins growing chains from neighboring cellulose synthase molecules to form a cellulose microfibril.
D.
Polymers of more than 6 to 8 glucose units are insoluble in water, promoting microfibril crystallization. There is no definite length for a cellulose polymer; synthesis is highly processive, and some polymers are as long as 15,000 glucose units.
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【多选题】某国有企业于2003年4月10日被人民法院宣告破产。根据企业破产法律制度的规定，下列给付请求中，能够成为破产债权的有（ ）
A.
因该企业编制虚假财务会计报告，市财政局由2003年4月5日对其做出罚款3万元的处罚，限15日内缴纳。
B.
光华公司与该企业签订的买卖合同，因企业被宣告破产而终止，光华公司要求赔偿由此造成的损失2万元。
C.
该企业应于2003年6月8日向京普公司支付已购买并入库的材料价款5万元。因企业被人民法院宣告破产，京普公司要求提前支付货款5万元。
D.
该企业厂长以企业名言借用荣和公司一辆轿车供其亲属使用，荣和公司要求返还。
查看完整题目与答案
【多选题】地陪预防游客走失的措施有( )。
A.
让游客记住接待社的名称、旅游车车牌号或标志、饭店的名称和电话
B.
做好每天行程预报工作，包括游览景点及用餐地点
C.
讲清旅游路线、所需时间，强调集合时间和地点
D.
地陪、全陪和领队要分工协作、密切配合
查看完整题目与答案
【简答题】应付给光华长的材料款
查看完整题目与答案
【多选题】某国有企业于2003年4月10日被人民法院宣告破产。根据企业破产法律制度的规定，下列给付请求中，能够成为破产债权的有( )。
A.
因该企业编制虚假财务会计报告，市财政局 2003年4月5日对其作出罚款3万元的处罚，限15日内缴纳
B.
光华公司与该企业签订的买卖合同，因企业被宣告破产而终止，光华公司要求赔偿由此造成的损失2万元
C.
该企业应于2003年6月8日向京普公司支付已购买并入库的材料价款5万元，因企业被人民法院宣告破产，京普公司要求提前支付货款5万元
D.
该企业厂长以企业名义借用荣和公司一辆轿车供其亲属使用，荣和公司要求返还
查看完整题目与答案
【判断题】“湖广熟天下足”、“扬一益二”等说法说明了南方经济的重要性。
A.
正确
B.
错误
查看完整题目与答案
【单选题】cellulose
A.
细胞
B.
蔗糖
C.
纤维素
D.
糖原
查看完整题目与答案
【简答题】齐鲁工厂为一般纳税人,根据其2011年6月份发生的部分经济业务编制会计分录。 答案写在纸上,拍照上传。 1.收到富达公司投资600 000元,其中:全新设备一台,双方共同确认价值500 000元,货币资金 100 000元存入银行。 2.向银行借入期限为三年的借款800 000元,年利率为5%,存入银行存款户。从光华公司购入甲材料一批,买价20 000元,增值税税率为17%,货税款均以银行存款支付...
查看完整题目与答案
【判断题】以下表述正确吗? 1、PWM控制技术在逆变电路中的应用最具代表性。 ◆正是由于在逆变电路中广泛而成功的应用,才奠定了PWM控制技术在电力电子技术中的突出地位。 ◆除功率很大的逆变装置外,不用PWM控制的逆变电路已十分少见。 2、PWM控制技术用于整流电路即构成PWM整流电路。可看成逆变电路中的PWM技术向整流电路的延伸。 A、正确 B、错误
A.
正确
B.
错误
查看完整题目与答案
【多选题】How do microtubules help direct the deposition of cellulose in the plant cell wall?
A.
The orientation of the newly deposited extracellular cellulose microfibrils is determined by the orientation of the underlying intracellular microtubules.
B.
The large cellulose synthase enzyme complexes are integral membrane proteins that continuously synthesize cellulose microfibrils on the outer face of the plasma membrane.
C.
The distal ends of the stiff microfibrils become integrated into the texture of the cell wall, and their elongation at the other end pushes the synthase complex along in the plane of the plasma membrane. The microtubules serve as tracks that help guide the movement of the enzyme complexes.
D.
The cortical array of microtubules attached to the plasma membrane by transmembrane proteins helps determine the direction in which the microfibrils are laid down. In this curiously indirect way, the cytoskeleton controls the shape of the plant cell and the modeling of the plant tissues.
查看完整题目与答案
相关题目：
【多选题】How is cellulose syntheszied in plants?
A.
The complex enzymatic machinery that assembles cellulose chains spans the plasma membrane, with one part on the cytoplasmic side positioned to bind the substrate, UDP-glucose, and elongate the chains, and another part extending to the outside, responsible for exporting the cellulose molecules to the extracellular space.
B.
Freeze-fracture electron microscopy shows a cellulose synthesis complex, or rosette, composed of six large particles arranged in a regular hexagon with a diameter of about 30 nm. Several proteins, including the catalytic subunit of cellulose synthase, make up this structure. Each of the six particles of the rosette most likely contains three cellulose synthase molecules, each synthesizing a single cellulose chain.
C.
In one working model of cellulose synthesis, cellulose chains are initiated by the transfer of a glucose residue from UDP-glucose to a “primer” glucose already bound to cellulose synthase on the cytoplasmic side of the plasma membrane, to form a disaccharide. As addition of further glucose residues lengthens the chain, it is extruded through a channel formed by the transmembrane helices of cellulose synthase and, on the outer suce of the plasma membrane, joins growing chains from neighboring cellulose synthase molecules to form a cellulose microfibril.
D.
Polymers of more than 6 to 8 glucose units are insoluble in water, promoting microfibril crystallization. There is no definite length for a cellulose polymer; synthesis is highly processive, and some polymers are as long as 15,000 glucose units.
查看完整题目与答案
【多选题】某国有企业于2003年4月10日被人民法院宣告破产。根据企业破产法律制度的规定，下列给付请求中，能够成为破产债权的有（ ）
A.
因该企业编制虚假财务会计报告，市财政局由2003年4月5日对其做出罚款3万元的处罚，限15日内缴纳。
B.
光华公司与该企业签订的买卖合同，因企业被宣告破产而终止，光华公司要求赔偿由此造成的损失2万元。
C.
该企业应于2003年6月8日向京普公司支付已购买并入库的材料价款5万元。因企业被人民法院宣告破产，京普公司要求提前支付货款5万元。
D.
该企业厂长以企业名言借用荣和公司一辆轿车供其亲属使用，荣和公司要求返还。
查看完整题目与答案
【多选题】地陪预防游客走失的措施有( )。
A.
让游客记住接待社的名称、旅游车车牌号或标志、饭店的名称和电话
B.
做好每天行程预报工作，包括游览景点及用餐地点
C.
讲清旅游路线、所需时间，强调集合时间和地点
D.
地陪、全陪和领队要分工协作、密切配合
查看完整题目与答案
【简答题】应付给光华长的材料款
查看完整题目与答案
【多选题】某国有企业于2003年4月10日被人民法院宣告破产。根据企业破产法律制度的规定，下列给付请求中，能够成为破产债权的有( )。
A.
因该企业编制虚假财务会计报告，市财政局 2003年4月5日对其作出罚款3万元的处罚，限15日内缴纳
B.
光华公司与该企业签订的买卖合同，因企业被宣告破产而终止，光华公司要求赔偿由此造成的损失2万元
C.
该企业应于2003年6月8日向京普公司支付已购买并入库的材料价款5万元，因企业被人民法院宣告破产，京普公司要求提前支付货款5万元
D.
该企业厂长以企业名义借用荣和公司一辆轿车供其亲属使用，荣和公司要求返还
查看完整题目与答案
【判断题】“湖广熟天下足”、“扬一益二”等说法说明了南方经济的重要性。
A.
正确
B.
错误
查看完整题目与答案
【单选题】cellulose
A.
细胞
B.
蔗糖
C.
纤维素
D.
糖原
查看完整题目与答案
【简答题】齐鲁工厂为一般纳税人,根据其2011年6月份发生的部分经济业务编制会计分录。 答案写在纸上,拍照上传。 1.收到富达公司投资600 000元,其中:全新设备一台,双方共同确认价值500 000元,货币资金 100 000元存入银行。 2.向银行借入期限为三年的借款800 000元,年利率为5%,存入银行存款户。从光华公司购入甲材料一批,买价20 000元,增值税税率为17%,货税款均以银行存款支付...
查看完整题目与答案
【判断题】以下表述正确吗? 1、PWM控制技术在逆变电路中的应用最具代表性。 ◆正是由于在逆变电路中广泛而成功的应用,才奠定了PWM控制技术在电力电子技术中的突出地位。 ◆除功率很大的逆变装置外,不用PWM控制的逆变电路已十分少见。 2、PWM控制技术用于整流电路即构成PWM整流电路。可看成逆变电路中的PWM技术向整流电路的延伸。 A、正确 B、错误
A.
正确
B.
错误
查看完整题目与答案
【多选题】How do microtubules help direct the deposition of cellulose in the plant cell wall?
A.
The orientation of the newly deposited extracellular cellulose microfibrils is determined by the orientation of the underlying intracellular microtubules.
B.
The large cellulose synthase enzyme complexes are integral membrane proteins that continuously synthesize cellulose microfibrils on the outer face of the plasma membrane.
C.
The distal ends of the stiff microfibrils become integrated into the texture of the cell wall, and their elongation at the other end pushes the synthase complex along in the plane of the plasma membrane. The microtubules serve as tracks that help guide the movement of the enzyme complexes.
D.
The cortical array of microtubules attached to the plasma membrane by transmembrane proteins helps determine the direction in which the microfibrils are laid down. In this curiously indirect way, the cytoskeleton controls the shape of the plant cell and the modeling of the plant tissues.
查看完整题目与答案