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【单选题】
公共出入口台阶踏步宽度不宜小于（ ），踏步高度不宜大于0．15m 。A.
0 ．20m
B.
0．26m
C.
0．30m
D.
0．40m
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【简答题】Dear Sir, I am university student．I once thought life at the 76．_________ university must be excellent, but now I had changed my mind． 77．_________ I have three roommates, and I was the l...
【单选题】蒸发量为4.0t/h，工作压力为1.3MPa的蒸汽锅炉，采用锅外软化水处理时，若锅水固氯比为7，则锅水Cl-含量应控制为（）。
A.
＜400mg/L
B.
＜500mg/L
C.
＜600mg/L
D.
＜700mg/L
【单选题】听力原文：Dear Sir, After watching the discussion about boxing on television last night, I felt I must write to you. Before I saw this program, I had not given any thought to the dangers of boxing. However...
A.
He had thought it dangerous.
B.
He bad thought it bloody.
C.
He had thought there was nothing wrong with the sport.
D.
He had not given any consideration to the dangers of the sport.
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