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【简答题】
示波器扫描时间因数是指光点在X轴方向移动单位长度所需的时间,用 或 表示
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举一反三
【单选题】That man is very poor. He even has no room __________.
A.
to live
B.
to live in
C.
living
D.
living i
【单选题】关于影响显卡性能的技术参数,下面哪一项排序正确()
A.
显存位宽>显示芯片>显存容量>显存速度
B.
显示芯片>显存容量>显存速度>显存位宽
C.
显示芯片>显存位宽>显存速度>显存容量
D.
显存速度>显存容量>显示芯片>显存位宽
【判断题】简支梁跨中截面弯矩的影响线与跨中有集中力 P 时的 M 图相同。
A.
正确
B.
错误
【判断题】简支梁跨中截面弯矩的影响线与跨中有集中力FP时的M图相同。
A.
正确
B.
错误
【单选题】Seldom ______so warmly welcomed.
A.
has he been
B.
he has been
C.
was he
D.
he had been
【简答题】He is poor. He has hardly enough to live on.
【单选题】Never in his whole life ______such a stupid thing.
A.
did he do
B.
has he done
C.
he has done
D.
he did
【判断题】简支梁跨中截面弯矩的影响线与跨中有集中力作用时的弯矩图相同
A.
正确
B.
错误
【单选题】Although he has taken a lot of medicine, his health _____ poor. [     ]
A.
stayed
B.
remains
C.
proves
D.
continued
【单选题】He always has pity _________ the poor.
A.
in
B.
at
C.
for
D.
on
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