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【单选题】
在操作接触器联锁正反转控制线路时,要使电动机正转变为反转,正确的操作方法( )A.
可直接按下反转启动按钮
B.
B可直接按下正转启动按钮
C.
C必须先按下停止按钮。再按下反转启动按钮
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】Psycholinguistics includes the study of _______ perception, the role of memory, concepts and other processes in language use, and how social and psychological factors affect the use of language.
A.
listening
B.
understanding
C.
speech
D.
writing
【单选题】Evidence gained from observation and experiment is often used to _______ a scientific theory.
A.
concern
B.
confirm
C.
consult
D.
combine
【单选题】All the recent news on AIDS is bad. The death of Rock Rudson last year raised public concern about the epidemic almost to the point of panic. But that reaction subsided for a time as people were reass...
A.
lessen
B.
sink
C.
vanish
D.
settle
【简答题】财务自由和提前退休的必要条件是当你的 大于你的 ,你就实现了财务自由。
【单选题】______ flees if one is constantly subjected to demeaning orders.
A.
Prime
B.
Harassment
C.
Conceit
D.
Pride
【单选题】______ in the color of sea water from blue to green seem to be caused by high or low concentration of salt.
A.
Variations
B.
Evaporations
C.
Explorations
D.
Explosions
【简答题】Stress and tiredness often ______ a lack of conce n tration.
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