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【单选题】
国家规定图纸的基本幅面有( )种。A.
3
B.
4
C.
5
D.
6
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【单选题】10°C时,滴定用去26.00mL0.1mol/L标准溶液,该温度下1L0.1mol/L标准溶液的补正值为+1.5mL,则20°C时该溶液的体积为()mL
A.
26
B.
26.04
C.
27.5
D.
24.5
【单选题】—We want someone to design the new art museum for us. —______ the young fellow have a try?
A.
Shall
B.
May
C.
Will
D.
Need
【单选题】The present system no longer meets the changing needs of our customers; we have to make a(n) ____ management system. [ ]
A.
contradictory
B.
endless
C.
flexible
D.
concrete
【单选题】We have received orders ______ US$1,000,000 since the new product was introduced to the market.
A.
amount for
B.
amount to
C.
account for
D.
amounting to
【单选题】John talked with me for about an hour yesterday. Never _______ him talk so much.
A.
had I heard
B.
did I hear
C.
I had heard
D.
I heard
【单选题】If the prediction for the earthquake ________ more accurate, we would have been more prepared and many more lives would have been saved.
A.
had been
B.
was
C.
has been
D.
were
【简答题】10吨煤，用去 4 5 ，用去______吨煤，还剩______煤．
【单选题】采用滴定分析法测定药物含量时用去滴定液20．00ml，滴定管的读数0．02ml，那么相对误差是
A.
±0．02%
B.
±1.0%
C.
±0．001%
D.
±0．01%
E.
±0．1%
【单选题】---- Do you know Jack well? ---- Certainly, we _________ friends since ten years ago.
A.
were
B.
have made
C.
have become
D.
have been
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