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【单选题】
在四杆机构中，最短杆与最长杆长度之和大于其余两杆长度之和，则该机构为A.
双摇杆机构
B.
曲柄摇杆机构
C.
双曲柄结构
D.
死机构
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【单选题】将洋葱鳞茎从土壤中拔出,立即取其鳞片叶表皮置于0.3 g•mL-l的蔗糖溶液中,待细胞形态不再发生变化,将该表皮从蔗糖溶液中取出并置于清水中,当细胞形态再次不发生变化时,则
A.
细胞中的含水量与实验开始时相等
B.
细胞液中蔗糖浓度较实验开始时高
C.
细胞壁对原生质层的“挤压”达到最大程度
D.
细胞液渗透压消失，细胞不再吸水
【简答题】B. Read a passage and choose the best answer. P36 The words"the menu"have at least three meanings for the waiter. The menu means---The range of food items served in an establishment, inclu...
【单选题】B. Read a passage and choose the best answer. P36 The words"the menu"have at least three meanings for the waiter. The menu means ---The range of food items served in an establishment, including thei...
A.
appetizers, soups, entrees, main courses, desserts and wines
B.
desserts and drinks
C.
appetizers, soups, entrees, main courses desserts and dishes
D.
appetizers, soups, entrees, main courses and desserts
【单选题】B. Read a passage and choose the best answer. P36 The words"the menu"have at least three meanings for the waiter. The menu means ---The range of food items served in an establishment, including thei...
A.
2
B.
3
C.
4
D.
5
【简答题】B. Read a passage and choose the best answer. P36 The words"the menu"have at least three meanings for the waiter. The menu means---The range of food items served in an establishment, inclu...
【简答题】出处:《英语专四写作 100 篇》 Topic 6 ( p26 )课外资料 要求: Check the new words and phrases that baffle your understanding only. Highlight the key words, phrases or sentences (6-8) and list them in your Topic Phrases. ...
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