The members club___12___ an annual membership fee of $30.
A. pays
B. mails
C. charges
D. costs
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Throughout this meeting, please be ______of other peoples opinions so that we can resolve
A. forgetful
B. capable
C. considerate
D. respective
I would like to know__5____many of you have had some
A. that
B. which
C. whom
D. how
人工呼吸时，对成人吹气每分钟（）次。
A. 10～12
B. 16～18
C. 6～8
D. 26～30
设置在A类中危险级火灾场所的推车式灭火器，其最大保护距离为（）（m）。
A. 30
B. 40
C. 20
D. 50
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