问题
多项选择题
防止煤尘飞扬的措施有（）。
A.煤层注水；湿式打眼
B.水炮泥
C.通风除尘
D.喷雾洒水；冲洗煤尘
答案
参考答案：A, B, C, D
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防止煤尘飞扬的措施有（）。
A.煤层注水；湿式打眼
B.水炮泥
C.通风除尘
D.喷雾洒水；冲洗煤尘
参考答案：A, B, C, D
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| Dear Lily, The Gold Coast is really great! We 1 a good time now. I 2 this letter 3 you at the swimming club on the beach (沙滩). There are 4 of people on the Gold Coast now. 5 of them 6 volleyball and some are swimming in the sea. Some people 7 and some people 8 sunbath (日光浴). Mary 9 to swim now, but I can't 10 her. I hope she is OK. | ||||
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