题目内容

将合适的短语依次填入下列5空：If you’re1a2ladder and you touch an exposed3 , the 4will go through you and the ladder5the ground.

查看答案

搜索结果不匹配？点我反馈

更多问题

将合适的短语依次填入下列5空：If you are standing1, there could be less2difference across you,3you could4be injured or even killed by current5 through your body.

Electricity will only flow if it can travel in a.

A. current
B. circuit
C. circle
D. cycle

The power should be turnedbefore the globe is replaced.

A. out
B. on
C. in
D. off

A charged particle is released from rest in a region where there is a constant electric field and a constant magnetic field. If the two fields are parallel to each other, the path of the particle is a （).

A. circle
B. parabola
C. helix
D. cycloid
E. straight line