在我国农村尿瘘产生的最常见原因是()
A.产伤
B.手术损伤
C.恶性肿瘤
D.长期放置子宫托
E.膀胱结核
参考答案:A
–Excuse me, could you tell me _____?
--Sorry, I’m a stranger here.
A.where can I have my hair cut
B.how can I go to the bank
C.why the post office is closed
D.when will the park open
在火灾自动报警系统中,区域显示器(火灾显示盘)应在()内正确接收和显示火灾报警控制器发出的火灾报警信号。
A.2s
B.3s
C.4s
D.5s