空调列车电力连接线长度一般应为（）。_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题填空题

空调列车电力连接线长度一般应为（）。

答案

参考答案：1600—1700mm

完形填空

完形填空。

     Look! This is my new school.    1    very big. There    2    fifty-two classrooms in it. They're    3     a
tall building. The lab is next    4     the classrooms. The library is behind    5      lab.  It's in front    6
the dining hall. The offices    7    next to the classrooms,    8   .    9    is a gym behind the tall building.
We often    10   basketball in it.

( )1. A. It
( )2. A. be
( )3. A. in
( )4. A. at
( )5. A. a
( )6. A. /
( )7. A. are
( )8. A. and
( )9. A. This
( )10. A. speak

B. It's
B. is
B. on
B. of
B. an
B. at
B. is
B. but
B. There
B. play

C. They
C. am
C. under
C. to
C. /
C. of
C. be
C. too
C. It
C. ride

D. They're
D. are
D. next
D. in
D. the
D. on
D. am
D. /
D. He
D. swim

选择题

英国科学家法拉第（　　）

A．发现了电流具有热效应

B．用实验证明了电流的周围存在着磁场

C．发现了电磁感应现象

D．发现了通电导体在磁场中要受到力的作用