公务员不准参加营业性歌厅、舞厅、夜总会等公共场所的开业庆典活动。()
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当进入被接见方的房间时,应先将书包和其他的随身携带的物品放到桌子上再开口说话。()
在人际交往中,借助举止传递的信息占45%,借助语言传递的信息占55%。()
If a reciprocating air compressor has a knock occurring in frequency with its operating RPM, the cause is probably _____.
A. misalignment or worn main bearings
B. insufficient cylinder lubrication
C. defective or poorly fitted valves
D. All of the above
In the sentence“I can also vouch that the blues,like all music,is a universal language”(Pal agraph 3),the word“Vouch”means________.
A. appreciate
B. promise
C. testify
D. gossip