题目内容
（请给出正确答案）
Current changing in direction and rising and falling in value is _____.
A.A.C
B.D.C
C.generator
D.fresh water generator
安装简答题APP，拍照搜题省时又省心！
更多“Current changing in direction …”相关的问题
查看材料
A．repeat
B．repetitive
C．repeating
D．repetition
Which of the following is NOT related to the current debate？
A．The immigration issues.
B．The changing demography.
C．The worry about the new languages.
D．The US's military strength.
A.hydraulic current
B.rectilinear current
C.rotary current
D.harmonic current
Which of the following is the current debate NOT related to？
A.The immigration issues.
B.The changing demography.
C.The worry about the new languages.
D.The US's military strength.
A、
B、
C、Magnetic field lines are always closed because there is no magnetic charge or magnetic monopole.
D、The assumption of displacement current is used to explain how changing magnetic field causes electric field.
A、One girl is leaving her current job and the other girl is thinking about going to graduate school.
B、The girl who is changing her job has been working in her current job for a long time.
C、The girl's current position is the first job after her graduation.
D、The girl suggested the other girl to invest in education.
A long solenoid is compressed to 80% of its original length (without changing the number of coils N), meanwhile the current on it changes from I to 2I. How does its magnetic energy change？ From U to ________×U
A、The different outlook of the world.
B、The increasing use of the Internet.
C、The different opinions of current affairs.
D、The rapidly changing world.
为了保护您的账号安全，请在“简答题”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
微信搜一搜
简答题
微信搜一搜
简答题
如搜索结果不匹配，请 
