单相接地电流为（）时，保护装置动作于跳闸。 A.>10A B.5～10A C.3～5_爱下问搜题

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问题单项选择题

单相接地电流为（）时，保护装置动作于跳闸。

A.>10A

B.5～10A

C.3～5A

D.<3A

答案

参考答案：A

完形填空

完形填空。

     My name  1 Su Dan. I have two  2 , Bob and Tom. We like hamburgers  3 lunch. Bob and I  4
French fries, but Tom  5 . I don't like  6 for breakfast,  7 Bob and Tom  8 . I like fruit for breakfast. 9
really like chicken  10 salad for dinner.

( )1. A. is
( )2. A. brother
( )3. A. on
( )4. A. like
( )5. A. do
( )6. A. an egg
( )7. A. or
( )8. A. do
( )9. A. They
( )10. A. so

B. am
B. sister
B. at
B. likes
B. don't
B. egg
B. and
B. don't
B. Them
B. but

C. are
C. cousin
C. for
C. eats
C. does
C. a egg
C. for
C. does
C. You
C. and

D. be
D. brothers
D. in
D. loves
D. doesn't
D. egges
D. but
D. doesn't
D. Us
D. of

选择题

下列节日中， * * 广场升旗最早的是[ ]

A．妇女节

B．儿童节

C．国庆节

D．劳动节