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【简答题】
How many guests will pay a visit to Beijing and Shanghai?
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皮皮学刷刷变学霸
举一反三
【单选题】在MR-II型电动冷却水温度控制系统中,热保护继电器的作用是________。
A.
防止三通调节阀卡在极限位置
B.
防止“增加”和“减少”输出接触器同时通电
C.
防止电机M过载烧坏
D.
防止冷却水温度超过上限值
【单选题】Please ____to let us have your offer as soon as possible
A.
Make your best
B.
Do your best
C.
Do the best
D.
Make the best
【简答题】碳素钢按其含碳量的多少分类，当含碳量小于（）％为低碳钢，含碳量（）％为中碳钢，含碳量大于（）％为高碳钢。
【单选题】We can not()our offer open for more than three days, so would you please email your acceptance.
A.
have
B.
place
C.
remain
D.
leave
【单选题】provide an offer Please ( ) the passengers with your seat when necessary.
A.
provide
B.
offer
C.
give
D.
provided
【单选题】Please一一to let us have your offer as soon as possible。
A.
do the best
B.
do your best
C.
make the best
D.
make your best
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