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【单选题】
某车间局部排风量为0.56kg/s，采暖室外计算温度为-25℃，冬季室内工作区温度为15℃，围护结构耗热量为58kJ/s，为使室内产生负压?机械送风量为排风量的90%，则要求的机械通风量为( )kg/s。A.
0.3
B.
0.5
C.
0.1
D.
0.4
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【多选题】Section D In this section, there is a dialogue happened in a shop. Complete the dialogue with the given sentences. 在本节中, Mom 和 Tom 在商店购物。请根据对话内容,将方框内符合对话情景的句子的序号填在对话的空白处,使对话完整。 Shop assistant: Good mo...
A.
I’ll take it.
B.
What can I do for you?
C.
What do you think of that yellow one?
D.
How much is it?
E.
What about that black one ?
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A.
with
B.
for
C.
against
D.
to
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