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【单选题】
关于位移电流,下列说法正确的是 [ ]
A.
位移电流是由变化的电场产生的
B.
位移电流是由线性变化的磁场产生的
C.
位移电流的热效应遵从焦耳定律
D.
位移电流的磁效应不服从环路定律
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【简答题】可编程控制器简称( )
【判断题】Plc是可编程控制器简称。
A.
正确
B.
错误
【单选题】Dear Bill, I am happy to hear ________ you.
A.
with
B.
about
C.
from
【单选题】可编程控制器简称()
A.
PLC
B.
PLV
C.
CAD
D.
DSC
【单选题】Dear Bill,I am happy to hear you.
A.
of
B.
about
C.
from
【简答题】阅读理解。 Dear Sir / Madam, I am the Bill and Exchange (assistant) Manager of the African Development Bank, MR. JOSEPH YANA. In my department I discovered an abandoned sum of USD$9.900.000 in an account t...
【单选题】—Oh,dear ! Bill, come here !Our little son ate a pill mistake again. —He must have thought it is candy.I've told you a hundred times to hide the medicinekids
A.
with;to
B.
by;towards
C.
in;for
D.
by;from
【简答题】Dear Bill, I’m glad to receive your letter,thank you for your caring for the weather and my health.But I am sorry to tell you that I have to stay at home because of the heavy fog and haze . Since the ...
【单选题】----Why didn’t you come to meet me, Bill? ----Sorry, dear. But I really forgot where I was _____ to meet you.
A.
demanded
B.
supposed
C.
delighted
D.
squeezed
【简答题】 Dear Bill, Thank you for all of your kindness.I really enjoy staying at                   1. your home for one month.Would you like very much visit                           2. me in Beijing in next...
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