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【单选题】
已知一个数据选择器的地址输入端有 4 个时,最多可以有( )个数据信号输出。A.
4
B.
6
C.
8
D.
16
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反馈参考答案：
举一反三
【单选题】Social action to help the poor should have the characteristics include______.
A.
the poor should see themselves as the source of the action
B.
the action should effect in major ways preconceptions of institutions
C.
the action should demand much in effect or skill
D.
all of the above
【简答题】试述气管胸部的位置和毗邻。
【单选题】Only after her mother came to help her for the first few months ______ to begin her project.
A.
did she allow
B.
had she allowed
C.
was she allowed
D.
is she allowed
【单选题】The boss suggested to Jessica strongly that she should have a good time, but didn’t help.
A.
which
B.
she
C.
she
D.
it
【单选题】I could help him with that, but I would sooner he ______ it by himself.
A.
does
B.
did
C.
do
D.
should do
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