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【判断题】
当采用W、C等热阴极材料作为阴极时，其导电机构一定是热发射型A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】There is _____ wrong with my computer. It doesn' t work now . I ' ll buy a new one .
A.
nothing.
B.
something
C.
everything
D.
anything
【单选题】听力原文：W: Jack, I'm having difficulty with all the theoretical stuff we're getting in our computer course. M: Oh, that part I understand. What I can't figure out is how to make it work on my program. Q:...
A.
He doesn't understand his staff.
B.
His computer doesn't work properly.
C.
He doesn' t know how to apply computer theory.
D.
He is unable to add the figures.
【单选题】There is _____ wrong with my computer. It doesn' t work now . I ' ll buy a new one .
A.
nothing.
B.
something.
C.
everything.
【单选题】---Again, my computer doesn' t work. ---____ must be something wrong with the CPU.
A.
There
B.
That
C.
It
D.
This
【单选题】听力原文：Who is going to come and see the computer hardware? (A) I haven't seen Kayla in ages. (B) The tech support team will send someone. (C) This software doesn' t work on my computer. (23)
A.
B.
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