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【简答题】
伸长类变形的失稳形式主要为 ,压缩类变形的失稳形式主要为 。
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举一反三
【单选题】Which of the following statement is TRUE according to the passage?
A.
Nowadays, the operating system you choose is not really important in the case of games.
B.
Apple's OSX is first in the market when it comes to graphics application.
C.
People who work as software developers are not interested in using Apple products.
D.
Large groups are not going to experiment with Apple products.
【单选题】The rate of heat transfer in a water-tube auxiliary boiler can be increased by .
A.
operating the boiler at less than normal water level
B.
installing fins on the firesides of water-tubes
C.
increasing the amount of excess air to the burners
D.
treating the boiler water with chemical oxygen scavengers
【单选题】生产企业自营或委托出口的货物当其申报办理出口退税时，应（）。
A.
向其所在地出口退税税务机关申报办理
B.
向其所在地主管征税税务机关申报办理
C.
向其所在地主管征税的税务机关或出口退税机关申报办理
D.
报经其主管征税的税务机关审核后，再向其所在地出口退税税务机关申报办理
【单选题】If over a period of weeks the air-box pressure of a turbo-charged, diesel engine, operating at full load, appears to be dropping off, the cause can be _____.
A.
open air-box drains
B.
loss of cooling water to the diffuser
C.
gradual fouling of the air filters
D.
improperly timed exhaust valves
【单选题】Quality control is normally performed by the _____ . A . QA personnel
B.
. project team
C.
. operating personnel
D.
. project management
E.
. None of the above.
【简答题】已知下列两反应所处状态完全相同： (1)Ni+Cu 2+ Ni 2+ +Cu； (2) 则 ______， ______。
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