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工业用的乙醚中常含有少量乙醇,常加入CaCl2除去少量乙醇,这是因为两者可以形成不溶于有机溶剂的结晶醇。()
A.
正确
B.
错误
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【简答题】Translate the last two sentences in para 4: 作为一个 1 ,惠特曼开始 2 ,将 3 。在这之前,没有人曾 4 。
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【单选题】Successful innovations have driven many older technologies to extinction and have resulted in higher productivity, greater consumption of energy, increased demand for raw materials, accelerated flow o...
A.
Older technologies die away.
B.
The quality of life is improved.
C.
Overall productivity increases.
D.
More raw materials become necessary.
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【单选题】Many features similar to those aeronautical innovations developed by man can be observed amongst birds, insects and plants. At times, observations of these natural phenomena have inspired man to imita...
A.
more advanced products were used in airplanes
B.
more research was devoted to studying bird flight
C.
greater efforts were directed towards shape designs of aircraft wings
D.
greater emphasis was put on guidance systems
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【简答题】Translate the last two sentences in para 4: 作为一个 1 诗歌流浪汉
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【多选题】中位机能是( )型的换向阀在中位时可实现系统卸荷。
A.
Y型；
B.
M型；
C.
P型；
D.
H型。
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【简答题】PASSAGE TWO 3.What does the last sentence in Para.16 imply about the daughter's attitude towards her mother?
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【单选题】宪法规定,我国社会主义经济制度的基础是生产资料的
A.
个人所有制
B.
混合所有制
C.
社会主义公有制
D.
劳动群众集体所有制
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【单选题】《宪法》规定我国社会主义经济制度的基础是( )。
A.
生产资料的的社会主义公有制
B.
按劳分配制
C.
社会主义市场经济体制
D.
多种所有制形式共同发展
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【简答题】Two things can be inferred from the last sentence in the third para: 1) She was 1 due to 2 . 2) It is a 3 , not a 4 .
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【多选题】中位机能是( )型的换向阀在中位时可实现系统卸荷。
A.
M
B.
P
C.
H
D.
K
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相关题目：
【简答题】Translate the last two sentences in para 4: 作为一个 1 ,惠特曼开始 2 ,将 3 。在这之前,没有人曾 4 。
查看完整题目与答案
【单选题】Successful innovations have driven many older technologies to extinction and have resulted in higher productivity, greater consumption of energy, increased demand for raw materials, accelerated flow o...
A.
Older technologies die away.
B.
The quality of life is improved.
C.
Overall productivity increases.
D.
More raw materials become necessary.
查看完整题目与答案
【单选题】Many features similar to those aeronautical innovations developed by man can be observed amongst birds, insects and plants. At times, observations of these natural phenomena have inspired man to imita...
A.
more advanced products were used in airplanes
B.
more research was devoted to studying bird flight
C.
greater efforts were directed towards shape designs of aircraft wings
D.
greater emphasis was put on guidance systems
查看完整题目与答案
【简答题】Translate the last two sentences in para 4: 作为一个 1 诗歌流浪汉
查看完整题目与答案
【多选题】中位机能是( )型的换向阀在中位时可实现系统卸荷。
A.
Y型；
B.
M型；
C.
P型；
D.
H型。
查看完整题目与答案
【简答题】PASSAGE TWO 3.What does the last sentence in Para.16 imply about the daughter's attitude towards her mother?
查看完整题目与答案
【单选题】宪法规定,我国社会主义经济制度的基础是生产资料的
A.
个人所有制
B.
混合所有制
C.
社会主义公有制
D.
劳动群众集体所有制
查看完整题目与答案
【单选题】《宪法》规定我国社会主义经济制度的基础是( )。
A.
生产资料的的社会主义公有制
B.
按劳分配制
C.
社会主义市场经济体制
D.
多种所有制形式共同发展
查看完整题目与答案
【简答题】Two things can be inferred from the last sentence in the third para: 1) She was 1 due to 2 . 2) It is a 3 , not a 4 .
查看完整题目与答案
【多选题】中位机能是( )型的换向阀在中位时可实现系统卸荷。
A.
M
B.
P
C.
H
D.
K
查看完整题目与答案
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