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【判断题】
(判断)单位质量产能最多的营养素是碳水化合物。( )A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
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【简答题】根据句意和首字母或汉意完成单词。 1. —What would you do if you had a million dollars? —I'd give it to c_________. 2. Pandas are Mary's f_________ animals. 3. He finds watching movies f_________ because the people spea...
【单选题】活塞本体的磨损主要发生在_____部位。1活塞顶;2裙部;3环槽;4销座孔;5环槽根部过渡圆角处;6活塞加强筋。
A.
①+③+④
B.
②+③+④
C.
②+⑤+⑥
D.
①+②+③
【单选题】活塞本体的磨损主要发生在______。 I、活塞顶 II、裙部 III、环槽 IV、销座孔 V、环槽根部过渡圆角 VI、活塞加强筋
A.
Ⅰ+Ⅲ+Ⅳ
B.
Ⅱ+Ⅲ+Ⅳ
C.
Ⅱ+Ⅴ+Ⅵ
D.
Ⅰ+Ⅱ+Ⅲ
【单选题】The example of tadpoles, fish eggs and waterfowl is used to show that the activities of man could give rise to negative chain reactions.
A.
Y
B.
N
C.
NG
【单选题】The example of tadpoles, fish eggs and waterfowl is used to show that the activities of man could give rise to ______.
A.
protecting the enviornment
B.
helping to balance nature
C.
negative chain reactions
D.
killing all the living things
【单选题】--- Would you have called her up _____ possible?
A.
- Yes, but I _____ busy doing my homework.
B.
had it been … was
C.
if it was … were
D.
if it had been … had been
E.
if it were … would be
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