人工挖孔桩施工现场必须配备专用(),作业中每两小时至少检测桩孔内气体一次。
A.换气设备
B.气体检测仪器
C.通风设备
D.氧气呼吸机
参考答案:B
用适当的介词或副词填空。
1. How are you getting____with your studies?
2. I'm not good____communicating____people.
3. These are the reasons____doing that.
4. They fell________love with each other two years ago.
5. Tom is becoming so crazy____playing basketball.
护理阑尾切除术后的病人,嘱咐早期起床活动,主要是为了防止()。
A.内出血
B.盆腔脓肿
C.肠粘连
D.切口感染
E.肠瘘