单项选择题
下图的输入电阻为()。
A.3.2KΩ
B.1.6KΩ
C.2.4KΩ
D.1.8KΩ
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单项选择题
The wounded soldiers’ blood _______ he ground red at the front.
A、died
B、dumped
C、drawed
D、dyed
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单项选择题
To ____ an entry visa is very difficult now.
A、appeal for
B、apply for
C、apply in
D、appeal in
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