问题
单项选择题
疏散通道上的防火卷帘,在感烟探测器动作后,应下降至距地(楼)面()m。
A、1.2m
B、1.5m
C、1.8m
D、2.0m
答案
参考答案:C
疏散通道上的防火卷帘,在感烟探测器动作后,应下降至距地(楼)面()m。
A、1.2m
B、1.5m
C、1.8m
D、2.0m
参考答案:C
根据上下文填空,将正确答案的序号填入题前括号里。 | |||
A. You can go to the bus stop 1___________ foot. Then, 2___________ the No.1 bus to the railway station (火车站). From there, you can catch the 3___________ to Shanghai. B. Train? A. Yes, you can go to Shanghai 4___________ train. B. Can I go by 5___________? A. Yes, you can. Because it's fast.
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