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【判断题】
判断交流或直流接触器的依据是通过主触点电流性质。( )A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】[5-83]The term restricted visibility, when used in the Rules, refers to ___
A.
situations when you can see vessels on radar that you cannot see visually
B.
visibility of less than half a mile
C.
any condition where visibility is restricted
D.
visibility where you cannot see shore
【单选题】Toady, people's lives become more traceable, because______.
A.
personal information is more and more difficult to protect
B.
people are more willing to tell their information
C.
technology is developing so fast
D.
governments have more power
【简答题】We should ____________(acquisition) more firsthand information.
【简答题】5× 8 3 表示______， 8 3 × 5表示______．
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