凿岩机冲击次数不稳定,凿岩效率低的排除方法()。A.调整供风压力 B.制造标准尺寸钎

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问题:

凿岩机冲击次数不稳定,凿岩效率低的排除方法()。

A.调整供风压力

B.制造标准尺寸钎尾

C.清洗套筒和转动格条套筒

D.修理或更换磨损的零

考点:凿岩机司机考试凿岩机司机考试题库
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Tim is third-grade pupil. Recently he failed in exams. When he     1.  

got his report , he was deep worried. The report should be signed by  2.   

his father in order that his father can know his poor work at school. On   3.   

the way to home, an idea appeared in his mind. When he got home, his 4 

father was reading a newspaper. Tim said jokingly,“Dad ,can you   5.   

write your name without your eyes shut?” His father repliedwitha smile 6.  

“I can try,son,give a pencil or a piece of paper.”As his father shut his eyes, 7.   

Tim placed a report on the table just beneath the pencil. “okey! His    8. 

father wrote his name in “a piece of paper”,The father went onreading  9.   

his paper and Tim was satisfied with the report sign by his father.    10. 

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加有鸡蛋的生的龙须面条

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股静脉、股动脉穿刺术

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电感滤波器通常()在电路中。

A.并联

B.串联

C.可并串

D.不接

题型:多项选择题

人体温度下降1℃,基础代谢率下降()。

A.2%~3%

B.4%~5%

C.6%~7%

D.8%~9%

E.9%~10%

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