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问题 单项选择题

自给()式空气呼吸器的主要部件有:气瓶、气瓶阀(爆破片)、带有系带的背架、减压器(一级)、供气阀(二级)、全面罩、安全装置等.

A.正压

B.负压

C.表压

D.绝压

答案

参考答案：A

听力题

Do you like playing __小题1:_(不同的)kinds of balls? Are you­ interested in collecting balls.  I have a__小题2:__(特别的)room in my house, which is _小题3:_(满) of all kinds of balls. I have been collecting them__小题4:__（从...以来）I was seven years old. Now I have got __小题5:__(千)of them. I have run out of room to __小题6:__(贮存)them. They are all __小题7:__(围绕着)our house. By the way, I’d like to __小题8:__(创建)a Ball Collectors’ __小题9:__(俱乐部), and __小题10:__(欢迎) to join us. Click here to know more! Click here to join us now.

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单项选择题

阳盛血热型月经先期首选：

A．解毒四物汤
B．保阴煎
C．二至丸
D．两地汤
E．清经散

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