问题
单项选择题
隧道施工应采取综合防尘措施，并应配备专用检测设备及仪器，隧道内存在矽尘的作业场所，（）应至少取样分析空气成分一次。
A.每周
B.每旬
C.每月
D.每季
答案
参考答案：C
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隧道施工应采取综合防尘措施，并应配备专用检测设备及仪器，隧道内存在矽尘的作业场所，（）应至少取样分析空气成分一次。
A.每周
B.每旬
C.每月
D.每季
参考答案：C
How is the weather in Xinjiang? Xinjiang is 1 the west of China. The weather there is very 2 . It’s cold in the morning, 3 it turns warm at noon. You must have 4 the famous saying, “Put on your leather coat in the morning but put on your shirt in the 5 of the day. And you can eat watermelons at the fire.” It means the weather changes very 6 . It rains little so it’s also very 7 there. And the fruit there is very sweet 8 there is lots of sunshine. Xinjiang is also famous 9 its grapes (葡萄). Mutton (牛肉) is Xinjiang’s popular food. Roast mutton is very delicious. 10 you go to Xinjiang one day, remember to try it.
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