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【单选题】
邀请招标，是指采购人依法从符合相应资格条件的供应商中随机抽取————家以上供应商，并以投标邀请书的方式邀请其参加投标的采购方式。A.
3
B.
5
C.
2
D.
6
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举一反三
【简答题】The UN Security Council is made up of five permanent members and ______ non-permanent members.
【单选题】某一个硅二极管当正向电压为0.7V时,测得它的正向电流为10mA,若正向电压增大到0.77V(即增加10%)时,正向电流约为( )。
A.
10mA
B.
11mA
C.
20mA
D.
100mA
【单选题】The Social Security Retirement Program is made up of two trust funds, ______ could go penniless by next year.
A.
the larger one
B.
the larger of which
C.
the largest one
D.
the largest of which
【单选题】The suitcase of the woman speaker’s colleague was blown up by the security police probably because ______.
A.
it failed to pass the security check
B.
it was suspected of containing a bomb
C.
it contained dirty disease-carrying clothes
D.
it was suspected of containing smuggled goods
【单选题】The events of Sept. 11 have ratcheted up security at American airports to the highest level ever, according to a spokesman for Transportation Secretary Norman Mineta. But to say there is plenty of roo...
A.
using false ID
B.
helping others in smuggling
C.
being in the US illegally
D.
denying or not mentioning past crimes
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