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【判断题】
( )晶闸管中频电源中,用记忆示波器接在逆变桥输出端可看到衰减振荡波形。
A.
正确
B.
错误
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参考答案:
举一反三
【简答题】---Hi, Tom. Any idea where Jane is? ---She in the classroom. I saw her there just now. A.shall be B.should have been C.must be D.might have been
【单选题】— Tom is never late for work. Why is he absent today ? — Something _______ to him.
A.
must happen
B.
should have happened
C.
could have happened
D.
must have happened
【判断题】图( a)所示桁架结构的力法基本体系如图(b)所示,力法典型方程的右端项等于 ( -X 1 d/EA ) 。 ( )
A.
正确
B.
错误
【判断题】菜肴是药膳的类型之一,其品种花样多,可以适应各种不同的口味。
A.
正确
B.
错误
【单选题】— Hi, Tom.Any idea where Mary is? — She in the reading room.I saw her there just now.
A.
shall be
B.
should have been
C.
should be
D.
might have been
【单选题】在 Windows的窗口中,选中末尾带有...的菜单意味着
A.
将弹出下一级菜单
B.
将执行该菜单命令
C.
表明该菜单项已被选用
D.
将弹出一个对话框
【简答题】带传动由 主动轮、 和传动带组成。
【单选题】---Tom is so worried about the test that he said he was going to study all night. ----Tell him he should quit _________and get some help.
A.
to have worried
B.
to worry
C.
worring
D.
from worrying
【单选题】已知通用对话框名为Cd1g,则执行下列的( )语句,将弹出“打开文件”对话框。
A.
Cd1g.ShowOpen
B.
Cd1g.ShowSave
C.
Cd1g.ShowSaveAs
D.
ShowOpen Cd1g
【单选题】Tom______at a CD shop.
A.
work
B.
working
C.
works
D.
worked
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