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【判断题】
道岔融雪装置电加热元件的电热材料和金属外壳间绝缘电阻不应小于25MΩ。A.
正确
B.
错误
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【简答题】A．She is worried her husband will spend too much time away from home． B．She is afraid her husband will become a fitness freak． C．She is concerned about her husband's health． D．She is worried her husba...
【单选题】It is quite usual now for a working mother to______.
A.
spend all her time and money on her only child
B.
be responsible for bringing up her only child
C.
have and bring up only one child
D.
put all her energies on her job
【简答题】世界上三大无酒精饮料是指哪些?
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