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【判断题】
蓄电池上的通气孔应经常保持清洁。（ ）A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】鱼翅是用( )的鳍干制而成。
【简答题】What are the facts of Hamer v. Sideway?
【单选题】These are the facts ______ by the school.
A.
to gather
B.
gathering
C.
gathered
D.
being gathered
【简答题】are the facts obtained from yzing information that is expressed in numbers.
【简答题】These are the facts my argument is based. (on)
【单选题】The following choices are the facts about the manner about opening and closing the door at home and office in Germany, which one is right?
A.
The widely-open door shows accepting and welcoming friends and strangers
B.
The narrowly-open door shows one knocking at the door before enter
C.
The half-opened door shows welcoming some people while others not
D.
The closed door shows the attitude of privacy protection.
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