问题
单项选择题
气体灭火系统的防护区围护结构及门窗的允许压强不宜小于（）Kpa。
A、1.1
B、1.2
C、1.3
D、1.4
答案
参考答案：B
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气体灭火系统的防护区围护结构及门窗的允许压强不宜小于（）Kpa。
A、1.1
B、1.2
C、1.3
D、1.4
参考答案：B
| 根据对话内容，从对话后的选项中选出能填入空白处的最佳选项，并在答题卡上将该项涂黑， 选项中有两项多余选项。 | |
| — Mum, my old bike has gone wrong again. What shall I do? — 1______ — Great! But can I have a mountain bike? — Why a mountain bike? There're no mountains around here. — Mountain bikes are stronger, and they are better at going up hills. But I … — 2______ — Money. Do you know how much they cost? At least $300 each! How can I get so much money? — 3______ — Over a year! But I need one now. — 4______ — I suppose about $ 150 each. — Well, that's sounds more reasonable. If you save $ 5 a week, you'll have enough in about six months. — 5______ — Well, go head with your saving and I'll make up the rest in six months. Now, go and get your old bike repaired.
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