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【单选题】
安装电动机,应调整好电动机的高度和 ,使电动机与传送带同轴。。A.
水平度
B.
垂直度
C.
深度
D.
平行度
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【单选题】—Why didn't you answer my phone just now? —Sorry．I Shenzhou VII launched on TV and didn't hear the phone．
A.
have watched
B.
watched
C.
was watching
D.
would watch
【简答题】It is not necessary for an air freight agent be acquainted with the matter of containerized service． （ ）
【简答题】It is not necessary to state whether freight has been paid or is paid at destination．（ ）
【单选题】It is not necessary to carry cash instead of dollar travellers' cheques because the latter can be______．
A.
used for phones, bus fares and hotel reservations
B.
used to pay in restaurants and big stores
C.
used like credit cards, even in remote areas
D.
exchanged easily, even at car rental companies
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