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【单选题】
地铁列车的紧急制动采用( )制动方式。A.
弹簧制动
B.
再生制动
C.
电制动
D.
空气制动
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【单选题】This house is really expensive. We are looking for an expert to() it before we decided to buy it.
A.
depend
B.
appraise
C.
demand
D.
apparent
【单选题】Rarely ()the opportunity to inform. our customers of such good news.
A.
had we have
B.
do we have
C.
we will have
D.
did we had
【判断题】Emails can be used to inform customers about a product, but not to collect their feedback.
A.
正确
B.
错误
【简答题】We will inform our customers ____________ arrival of the shipment ourselves.
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