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【判断题】
邻苯二甲酸酯的酯化反应一般分两步进行,第一单酯,这一步反应速度很慢,但是由单酯反应生成双酯的过程却很快。A.
正确
B.
错误
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【单选题】This umbrella is____that one,but____than that one.
A.
as beautiful as,expensive
B.
as beautifully as,more expensive
C.
as beautiful as,more expensive
D.
more beautiful as,as expensive
【单选题】室外消火栓的布置间距,必须保证城市街道的任何部位着火都在两座消火栓的保护半径之内
A.
低压消火栓布置间距不应超过120m;高压消火栓的布置间距不应超过60m
B.
低压消火栓布置间距不应超过lOOm;高压消火栓的布置间距不应超过50m
C.
低压消火栓布置间距不应超过80m;高压消火栓的布置间距不应超过40m
D.
低压消火栓布置间距不应超过60m:高压消火栓的布置间距不应超过30m
【单选题】When an economy is above full employment and the government has a budget deficit, that deficit ( ).
A.
exceeds the structural deficit
B.
is equal to the structural deficit minus the cyclical deficit
C.
is equal to the cyclical deficit minus the structural deficit
D.
is less than the structural deficit
【简答题】Researchers put patients through a set of psychological tests to determine the negative consequences of sleep ______(deficit, adjust, exposure, condense, asset, competent, precise, excess, beneficial,...
【单选题】The actual budget deficit is equal to the
A.
structural deficit.
B.
cyclical deficit.
C.
structural deficit minus the cyclical deficit.
D.
structural deficit plus the cyclical deficit.
【单选题】室外消火栓的布置间距，必须保证城市街道的任何部位着火都在两座消火栓的保护半径之内。（）
A.
低压消火栓布置间距不应超过120m；高压消火栓的布置间距不应超过60m。
B.
低压消火栓布置间距不应超过100m；高压消火栓的布置间距不应超过50m。
C.
低压消火栓布置间距不应超过80m；高压消火栓的布置间距不应超过40m。
D.
低压消火栓布置间距不应超过60m：高压消火栓的布置间距不应超过30m。
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