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【多选题】
下列关于表格的操作说法错误的是( )
A.
在插入列时，别个的宽度不发生改变，但随着列的增加，列的宽度相应减小
B.
选中要删除的行或列，按delect键或backspace键也可删除行或列
C.
将光标放置在要插入的位置，选择菜单中的【修改】|【表格】|【插入行】命令即可插入一行
D.
合并单元格是所选区域可以不再同一个矩形内
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【简答题】Task 1 Generally speaking, business survey, product design and production are the three major steps before the release of a new product. Discuss in pairs: a) What activities are usually included in ea...
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【简答题】下列选项括号中的内容表述有误的一项是。( ) A.作为我国首次按照国际适航标准研制的150座级干线客机，C919首飞成功标志着我国大型客机项目取得重大突破。(该句无语病) B. 我坚信，在书海耕耘，能让人遇见不同风景，成就人生的品质与高度。(该句是单句) C. 近年来，有不少当代文学作品改编成电视剧，其中有不少出自茅盾文学奖的获奖作品，比如《平凡的世界》、《推拿》、《红高粱》。(该句正...
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【单选题】阅读下面的文言文,回答问题。 【甲】小石潭记 从小丘西行百二十步,隔篁竹,闻水声,如鸣 珮 环 ,心乐之。伐竹取道,下见小潭,水尤清冽。全石以为底,近岸,卷石底以出,为坻,为屿,为 嵁 ,为岩。青树翠蔓,蒙络摇缀,参差披拂。 潭中鱼可百许头,皆若空游无所依,日光下澈,影布石上。 佁 然不动, 俶 尔远逝,往来翕忽,似与游者相乐。 潭西南而望,斗折蛇行,明灭可见。其岸势犬牙差互,不可知其源。 坐潭上...
A.
同“巡”，巡视;
B.
顺着
C.
抚摸
D.
遵循、沿袭
查看完整题目与答案
【多选题】下列关于膨胀阀的说法错误的是()。
A.
膨胀阀安装在蒸发器的入口处
B.
其作用是将低温、低压的液态制冷剂转化为雾状制冷剂
C.
可根据制冷负荷的大小调节制冷剂的流量
D.
其作用是将雾状制冷剂转化为高温、高压的液态制冷剂
查看完整题目与答案
【简答题】《小石潭记》选自《 柳河东集 》,作者 柳宗元 ,字 _________ , 唐代 (朝代)文学家,“唐宋八大家”之一。世称“ 柳河东 ”。"______________"是 柳宗元 被贬为永州司马时,借写_____________抒写胸中愤郁的散文。
查看完整题目与答案
【单选题】Three major documents involved in the fourth step are_________.
A.
a Letter of Intent, Articles of Association and a Charter
B.
a Letter of Intent, a Charter and a contract
C.
Articles of Association, a Charter and a contract
D.
documents of intellectual property rights, patent rights and export numbers
查看完整题目与答案
【判断题】Deduction involves a three-step form of reasoning called Syllogism: General Premise ( the initial generalization), Major Premise ( the specific case ), and Conclusion ( the resulting statement).
A.
正确
B.
错误
查看完整题目与答案
【多选题】下列关于膨胀阀的说法错误的是()。
A.
膨胀阀安装在蒸发器的入口处
B.
其作用是将低温、低压的液态制冷剂转化为雾状制冷剂
C.
可根据制冷负荷的大小调节制冷剂的流量
D.
其作用是将雾状制冷剂转化为温、高压的液态制冷剂
查看完整题目与答案
【简答题】第八章作业.pdf
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【多选题】Three major feedback mechanisms cooperate in regulating the overall rate of de novo purine nucleotide synthesis and the relative rates of formation of the two end products, adenylate and guanylate.
A.
The first mechanism is exerted on the first reaction that is unique to purine synthesis: transfer of an amino group to PRPP to form 5-phosphoribosylamine. This reaction is catalyzed by the allosteric enzyme glutamine-PRPP amidotransferase, which is inhibited by the end products IMP, AMP, and GMP. AMP and GMP act synergistically in this concerted inhibition. Thus, whenever either AMP or GMP accumulates to excess, the first step in its biosynthesis from PRPP is partially inhibited.
B.
In the second control mechanism, exerted at a later stage, an excess of GMP in the cell inhibits formation of xanthylate from inosinate by IMP dehydrogenase, without affecting the formation of AMP. Conversely, an accumulation of adenylate inhibits formation of adenylosuccinate by adenylosuccinate synthetase, without affecting the biosynthesis of GMP. When both products are present in sufficient quantities, IMP builds up, and it inhibits an earlier step in the pathway; this is another example of the regulatory strategy called sequential feedback inhibition. In the third mechanism, GTP is required in the conversion of IMP to AMP, whereas ATP is required for conversion of IMP to GMP, a reciprocal arrangement that tends to balance the synthesis of the two ribonucleotides.
C.
The final control mechanism is the inhibition of PRPP synthesis by the allosteric regulation of ribose phosphate pyrophosphokinase. This enzyme is inhibited by ADP and GDP, in addition to metabolites from other pathways for which PRPP is a starting point.
D.
all the above.
查看完整题目与答案
相关题目：
【简答题】Task 1 Generally speaking, business survey, product design and production are the three major steps before the release of a new product. Discuss in pairs: a) What activities are usually included in ea...
查看完整题目与答案
【简答题】下列选项括号中的内容表述有误的一项是。( ) A.作为我国首次按照国际适航标准研制的150座级干线客机，C919首飞成功标志着我国大型客机项目取得重大突破。(该句无语病) B. 我坚信，在书海耕耘，能让人遇见不同风景，成就人生的品质与高度。(该句是单句) C. 近年来，有不少当代文学作品改编成电视剧，其中有不少出自茅盾文学奖的获奖作品，比如《平凡的世界》、《推拿》、《红高粱》。(该句正...
查看完整题目与答案
【单选题】阅读下面的文言文,回答问题。 【甲】小石潭记 从小丘西行百二十步,隔篁竹,闻水声,如鸣 珮 环 ,心乐之。伐竹取道,下见小潭,水尤清冽。全石以为底,近岸,卷石底以出,为坻,为屿,为 嵁 ,为岩。青树翠蔓,蒙络摇缀,参差披拂。 潭中鱼可百许头,皆若空游无所依,日光下澈,影布石上。 佁 然不动, 俶 尔远逝,往来翕忽,似与游者相乐。 潭西南而望,斗折蛇行,明灭可见。其岸势犬牙差互,不可知其源。 坐潭上...
A.
同“巡”，巡视;
B.
顺着
C.
抚摸
D.
遵循、沿袭
查看完整题目与答案
【多选题】下列关于膨胀阀的说法错误的是()。
A.
膨胀阀安装在蒸发器的入口处
B.
其作用是将低温、低压的液态制冷剂转化为雾状制冷剂
C.
可根据制冷负荷的大小调节制冷剂的流量
D.
其作用是将雾状制冷剂转化为高温、高压的液态制冷剂
查看完整题目与答案
【简答题】《小石潭记》选自《 柳河东集 》,作者 柳宗元 ,字 _________ , 唐代 (朝代)文学家,“唐宋八大家”之一。世称“ 柳河东 ”。"______________"是 柳宗元 被贬为永州司马时,借写_____________抒写胸中愤郁的散文。
查看完整题目与答案
【单选题】Three major documents involved in the fourth step are_________.
A.
a Letter of Intent, Articles of Association and a Charter
B.
a Letter of Intent, a Charter and a contract
C.
Articles of Association, a Charter and a contract
D.
documents of intellectual property rights, patent rights and export numbers
查看完整题目与答案
【判断题】Deduction involves a three-step form of reasoning called Syllogism: General Premise ( the initial generalization), Major Premise ( the specific case ), and Conclusion ( the resulting statement).
A.
正确
B.
错误
查看完整题目与答案
【多选题】下列关于膨胀阀的说法错误的是()。
A.
膨胀阀安装在蒸发器的入口处
B.
其作用是将低温、低压的液态制冷剂转化为雾状制冷剂
C.
可根据制冷负荷的大小调节制冷剂的流量
D.
其作用是将雾状制冷剂转化为温、高压的液态制冷剂
查看完整题目与答案
【简答题】第八章作业.pdf
查看完整题目与答案
【多选题】Three major feedback mechanisms cooperate in regulating the overall rate of de novo purine nucleotide synthesis and the relative rates of formation of the two end products, adenylate and guanylate.
A.
The first mechanism is exerted on the first reaction that is unique to purine synthesis: transfer of an amino group to PRPP to form 5-phosphoribosylamine. This reaction is catalyzed by the allosteric enzyme glutamine-PRPP amidotransferase, which is inhibited by the end products IMP, AMP, and GMP. AMP and GMP act synergistically in this concerted inhibition. Thus, whenever either AMP or GMP accumulates to excess, the first step in its biosynthesis from PRPP is partially inhibited.
B.
In the second control mechanism, exerted at a later stage, an excess of GMP in the cell inhibits formation of xanthylate from inosinate by IMP dehydrogenase, without affecting the formation of AMP. Conversely, an accumulation of adenylate inhibits formation of adenylosuccinate by adenylosuccinate synthetase, without affecting the biosynthesis of GMP. When both products are present in sufficient quantities, IMP builds up, and it inhibits an earlier step in the pathway; this is another example of the regulatory strategy called sequential feedback inhibition. In the third mechanism, GTP is required in the conversion of IMP to AMP, whereas ATP is required for conversion of IMP to GMP, a reciprocal arrangement that tends to balance the synthesis of the two ribonucleotides.
C.
The final control mechanism is the inhibition of PRPP synthesis by the allosteric regulation of ribose phosphate pyrophosphokinase. This enzyme is inhibited by ADP and GDP, in addition to metabolites from other pathways for which PRPP is a starting point.
D.
all the above.
查看完整题目与答案