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【简答题】
, such as ash, soot, metal oxides and even sea salts, play a major role in air pollution.
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皮皮学刷刷变学霸
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【判断题】某公司在一工地用吊篮进行外装修作业时，施工员指派一名抹灰工升吊篮，由于吊篮未挂保险钢丝绳，在上升时突然一个倒链急剧下滑，吊篮随即倾斜，由于一作业人员未系安全带，从吊篮坠落死亡。
高处作业吊篮必须设置专为作业人员使用的挂设安全带的安全绳及安全锁扣。
A.
正确
B.
错误
【多选题】It must be understood that neither by word nor deed had I given Fortunato cause to doubt my good will. I continued as was my wont, to smile in his face, and he did not perceive that my smile now was a...
A.
William Faulkner
B.
Edgar Allan Poe
C.
Ralph Waldo Ellison
D.
The Autobiography
E.
Barn Burning
F.
The Cask of Amontillado
【单选题】技师甲说:当主动齿轮比从动齿轮转得快时是减速;技师乙说:当从动齿轮比主动齿轮转得快时是超速。以下说法正确的是()
A.
技师甲正确
B.
技师乙正确
C.
技师甲和乙都正确
D.
技师甲和乙都不正确
【单选题】技师甲说:当主动齿轮比从动齿轮转得快时是减速;技师乙说:当从动齿轮比主动齿轮转得快时是超速。以下说法正确的是()
A.
仅技师甲正确
B.
仅技师乙正确
C.
技师甲和乙都正确
D.
技师甲和乙都错误
【多选题】Energy crisis refers to a critical in the supply of energy-producing fuels, such as , oil, and . During the early 1970’s, the demand for petroleum increased , and Western countries depended heavily on...
A.
shortage
B.
gas
C.
coal
D.
sharply
E.
supplies
F.
worse
G.
reduced
H.
supported
I.
energy
J.
1973
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