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【单选题】
《中药药典》规定,除另有规定外,恒重系指供试品连续两次干燥或炽灼后的重量差异在多少mg以下的重量:A.
3
B.
0.3
C.
1
D.
0.5
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举一反三
【单选题】I was ______ in my reading, and didn't at first hear the doorbell ting.
A.
immured
B.
immersed
C.
busy
D.
infatuated
【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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