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【单选题】
一般电动执行机构的执行单元伺服电机需要外配电容器，说明该伺服电机是?电动机。A.
直流
B.
两相异步
C.
三相异步
D.
三相同步
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反馈参考答案：
举一反三
【简答题】简述药物主动转运和被动转运的特点
【单选题】What cultural shock does David have when he lived in Germany?
A.
When he studied in Germany, he loved to clap his hands to show appreciation
B.
When the class is over, students knock on the tables to show appreciation in Germany.
C.
In Germany, clapping one's hands is not associated with showing appreciation.
D.
He has taught his friends to clap hands to show appreciation.
【单选题】以下关于具体劳动与抽象劳动的说法正确的是()
A.
它们是各自独立存在的两种劳动
B.
它们是两次劳动
C.
它们在时间上和空间不是统一的
D.
它们是商品生产者的同一劳动过程不可分割的两个方面
【简答题】How many more medals did Germany win than South Korea?
【单选题】能否给我们2个点的折扣?可以翻译成:
A.
Can you give us 2% discount?
B.
Can you give us 2% decrease?
C.
Can you give us 20% discount?
D.
Can you give us 20% decrease?
【单选题】Heisenberg did not leave Germany during the Second World War because he ________.
A.
supported the Nazi regime
B.
wanted to contribute to the German physics
C.
was not sympathetic for the Nazi regime
D.
wanted to develop a nuclear reactor in Germany
【简答题】简述药物主动转运和被动转运的特点.
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