已知均匀磁场的磁感应强度B是0.8T，直导体的有效长度10cm导体在_爱下问搜题

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问题单项选择题

已知均匀磁场的磁感应强度B是0.8T，直导体的有效长度10cm导体在垂直于磁力线方向上运动的速度是V=10m/s，直导体上的感应电动势应为（）。

A、80V

B、8V

C、0.8V

D、0.08V

答案

参考答案：C

选择题

下列加粗字的读音完全不同的一项是[ ]

A．称职　称呼　称霸　对称图形

B．和气　和面　和药　随声附和

C．更衣　打更　更加　三更半夜

D．分外　分明　缘分　分毫不差

完形填空

完形填空。

     This boy's name is___1___ . He___2___twelve. This is ___3___school.___4___teacher is Miss
Yang.___5___a good teacher.
     Jim has___6___good friend___7___school. His name ___8___Zhang Lin.
     They're___9___Class 2, Grade 7. They are the best students in___10___class.

( )1. A. Jim Green
( )2. A. am
( )3. A. he
( )4. A. He
( )5. A. She's
( )6. A. the
( )7. A. to
( )8. A. are
( )9. A. at
( )10.A. these

B. Green Jim
B. is
B. him
B. Him
B. She
B. /
B. on
B. is
B. on
B. they

C. Jim green
C. are
C. his
C. He's
C. Her
C. a
C. at
C. be
C. to
C. they're

D. Green jim
D. be
D. he's
D. His
D. He
D. an
D. /
D. am
D. in
D. their