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问题
判断题
广西壮族自治区乡、镇人民政府应当有专人负责环境保护工作。
答案
参考答案：
对
选择题
The coal miners ____ in the coal mine for 10 hours before we came to their rescue.
A. had trapped
B. had been trapping
C. had been trapped
D. would have been trapped
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多项选择题
板桩码头建筑物沉桩施工，可采用（）方法。
A.插打沉桩
B.一次沉桩
C.复打沉桩
D.冲击沉桩
E.多次往复沉桩
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