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【单选题】
求解需求量小于供应量的运输问题不需要做的是( )
A.
虚设一个需求点
B.
令供应点到虚设的需求点的单位运费为0
C.
取虚设的需求点的需求量为恰当值
D.
删去一个供应点
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【简答题】.如图,正方体ABCD-A 1 B 1 C 1 D 1 中,AC与B 1 D所成的角为 度
【单选题】如图正方体 ABCD-A 1 B 1 C 1 D 1 中, BC 1 与 B 1 D 1 所成的角为()
A.
3 0 °
B.
45°
C.
60°
D.
90°
【单选题】We have to investigate as _________ customers as possible in order to make sure of the potential of the market.
A.
many
B.
much
C.
more
D.
most
【单选题】We learn from Paragraph 2 that outside directors are supposed to be______.
A.
generous investors
B.
unbiased executives
C.
share price forecasters
D.
independent advisers
【多选题】某项经济业务的发生没有影响所有者权益,则可能导致
A.
资产和负债同时增减
B.
资产和负债一增一减
C.
资产内部一增一减
D.
负债内部一增一减
【单选题】.This piece of evidence doesn’t _______ what the other witness said. We have to conduct a full investigation.
A.
fit in with
B.
keep up with
C.
come to terms with
D.
stay in touch with
【简答题】如图, 在正方体ABCD—A 1 B 1 C 1 D 1 中,E,F分别是正方形A 1 B 1 C 1 D 1 和ADD 1 A 1 的中心,则EF和BD所成的角是 。
【单选题】Ten minutes earlier, ______ we could not have been a aught in the heavy rain.
A.
if
B.
unless
C.
and
D.
so
【简答题】如图,在正方体ABCD-A 1 B 1 C 1 D 1 中,求证:平面A 1 BD∥平面CD 1 B 1 .
【单选题】The hardware makers ______.
A.
have obtained enormous profits from the operation
B.
have invested heavily on the research of new products
C.
have helped doctors and hospitals gain more experience
D.
have successfully proved the effectiveness of their products
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