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【判断题】
当电网一相故障接地时，工作接地有抑制电压升高的作用。()A.
正确
B.
错误
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举一反三
【单选题】Film has a much shorter history, especially when _____ such art forms as music and painting.
A.
having compared with
B.
comparing with
C.
compare with
D.
compared with
【单选题】Film has a much shorter history, especially when ______ such art form as music and painting.
A.
having compared to
B.
comparing to
C.
compare to
D.
compared to
【简答题】数据流图用于抽象描述一个软件的逻辑模型，数据流图由一些特定的图符构成。下列图符名标识的图符不属于数据流图合法图符的是（ ）。 A)控制流 B)加工 C)存储文件 D)源和潭
【单选题】Alice in Wonderland ___________ for 15 days and many of us like the film very much.
A.
begins
B.
has begun
C.
began
D.
has been on
【简答题】对于我国的媒介来说( )是办好电台、电视台的根本前提和保证,也是衡量一个媒介是否合格的首要尺度。
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