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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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参考解析：
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皮皮学刷刷变学霸
举一反三
【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】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】“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
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