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【单选题】
锗二极管的死区电压为 V,导通电压为0.3V。A.
0.5
B.
0.7
C.
1.5
D.
0.2
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【单选题】Had you prepared for your lecture, you______ more fluently.
A.
should have spoken
B.
would have spoken
C.
would speak
D.
had spoken
【简答题】东巴文字是目前世界唯一存活着的象形文字,成为文字起源和发展的( )。
【简答题】某噬菌体可以携带供体DN段进入受体细胞中,但不能进行复制,这种噬菌体称为__________。
【单选题】______ you ______ any doubt on the delivery receipt, contact us at 4008 9666.
A.
Should; have
B.
In case; had
C.
If; had
D.
Have; had
【单选题】I should like to ______ to the theater with you yesterday, but I didnt have time.
A.
go
B.
have gone
C.
going
D.
be going
【简答题】任何要迅速扩大经营规模的企业，都会遇到相当严重的现金短缺情况。（ ）
【简答题】I'm ashamed _____________ such a thing. [A] that you would have done [B] that you should have done [C] of what you are doing [D] to what you were doing
【单选题】There was a lot of fun at the party. You ________, but why didn't you? [ ]
A.
should come
B.
ought to have come
C.
may have come
D.
must have come
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