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【判断题】
采用U管压差计测量压力差时,U管压差计的读数与指示液的密度和U管的粗细有关。A.
正确
B.
错误
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举一反三
【单选题】He tells me not only his parents but also he ______America.
A.
has been to
B.
have been to
C.
have gone to
D.
has gone to
【单选题】某地商业屋顶的分布式光伏项目,项目建设初期,业主并网时采用了“自发自用,余电上网”模式;后期,由于商场整体搬迁,用电量锐减,投资商是否可以将其变更为“全部上网”模式,将电量全部卖给国家电网。下列说法正确的是()
A.
这种做法可以，未来还能再变更回“自发自用，余电上网”模式
B.
这种做法可以，但未来不能再变更回“自发自用，余电上网”模式
C.
这种做法不可以，电网不允许
D.
说不好，看电网心情
【单选题】How lucky he was! He ____ involved in the murder.
A.
must have been
B.
can have been
C.
could have been
D.
would have been
【简答题】Although the situation at the negotiation table is always changeable, it is necessary to make out a detailed plan for the forthcoming negotiation. "Top line" and "bottom line" should be decided. For m...
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