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【单选题】
PID 调节器常用的传递函数形式中K p 、K i 、K d 分别表示( )A.
积分系数 微分系数 比例系数
B.
微分系数 比例系数 积分系数
C.
微分系数 积分系数 比例系数
D.
比例系数 积分系数 微分系数
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举一反三
【单选题】He made a proposal that the problem ______ at the meeting. ( )
A.
discuss
B.
be discussed
C.
will be discussed
D.
would be discussed
【单选题】What does the doctor think his problem is?
A.
His wife.
B.
His job.
C.
His operation.
【单选题】Wait for me ___________ the bus stop and we will meet them ___________ the park which is two miles away ___________ here.
A.
at…for…from
B.
on…at…to
C.
at…in…from
D.
in…in…near
【单选题】____ will meet them at the airport and take them to the hotel in Shanghai?
A.
The author
B.
The driver of the company
C.
A representative of the company
D.
Mr. Smith’s wife
【简答题】家畜胃肠内的静脉血汇合后首先形成（），经肝门进入肝内，再经肝静脉流入（）。
【简答题】家畜胃肠内的静脉血汇合后首先形成(),经肝门进入肝内,再经肝静脉流入()。
【简答题】黄瓜栽培中,白天在适温下,适当降低夜间温度,有利于体内营养物质的积累。有利于( )的分化。
【简答题】His proposal was that the problem (discuss) ______ at the meeting.
【单选题】Was it in 1802 when he discovered his hearing problem _____ Beethoven realized that his future ______ in composing music? [ ]
A.
that; lay
B.
when; lay
C.
which; laid
D.
that; laid
【简答题】3 5 的倒数与 1 2 的倒数的和除以 1 4 的倒数，是多少？
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