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【简答题】
什么是局部均衡和一般均衡,两者的区别和联系是什么?
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【单选题】毛果芸香碱不具有的作用是
A.
收缩胃肠道平滑肌
B.
收缩骨骼肌
C.
降低眼内压
D.
减慢心率
E.
增加腺体分泌
【单选题】我国公路铁路主要采用的缓和曲线是( )。
A.
双曲线
B.
抛物线
C.
双纽线
D.
回旋线
【单选题】Trunk type diesel engine pistons are effectively cooled when heat is .
A.
radiated through the engine block
B.
transferred to water cooled cylinder walls
C.
conducted through the piston crown
D.
transferred to escaping exhaust gases
【单选题】毛果芸香碱不具有的作用是
A.
眼内压降低
B.
骨骼肌收缩
C.
胃肠道平滑肌收缩
D.
腺体分泌增加
【单选题】毛果芸香碱不具有的作用是
A.
胃肠平滑肌收缩
B.
骨胳肌收缩
C.
眼内压下降
D.
心率减慢
【单选题】In a medium speed diesel engine, a trunk type piston may be cooled by_______Ioil circulation though passages in the piston crown IIheat transfer through piston rings and liner wall
A.
I only
B.
II only
C.
either I or II
D.
neither I or II
【单选题】Trunk-type diesel engine pistons are most effectively cooled by heat_____.
A.
conducted through the engine block
B.
conducted to water cooled cylinder walls
C.
conducted through the piston crown
D.
loss to escaping exhaust gases
【单选题】毛果芸香碱不具有的作用是
A.
刺激腺体分泌
B.
降低眼内压
C.
缩瞳
D.
调节远视
【单选题】“In Africa, every five seconds, a child dies of starvation” , which type of opening does it belong to?
A.
Startling facts, numbers and data
B.
Questions
C.
Vivid stories
D.
Quotation
【单选题】【C19】
A.
dies back
B.
dies down
C.
dies off
D.
dies out
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