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【多选题】
在哪些地点掘进巷道发生冒顶、片帮事故？（）A.
大倾角巷道
B.
木棚子支护的巷道
C.
巷道交岔点
D.
地质变化带处、空顶处
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】—Must I finish the work today, mom ? —No, you ______.You can finish it tomorrow.
A.
mustn’t
B.
can’t
C.
shouldn’t
D.
needn’t
【单选题】—Must I finish the work today, Mom? —No, you _____. You can finish it tomorrow. [ ]
A.
mustn't
B.
needn't
C.
shouldn't
D.
can't
【单选题】—Must I finish the work today, Mom? —No, you . You can finish it tomorrow .
A.
mustn’t
B.
can’t
C.
needn’t
【单选题】—Must I finish my homework now, Mom? —No, you _______.You can do it tomorrow.
A.
can’t
B.
needn’t
C.
mustn’t
【单选题】—If a good program on TV,could I watch it,Mom? —Sure,but you must finish your homework first [ ]
A.
there is
B.
there is going to be
C.
there was
D.
there have
【单选题】----Must I finish the work today, Mom? ----No, you _______________. You can finish it tomorrow.
A.
mustn’t
B.
can’t
C.
needn’t
D.
shouldn’t
【单选题】—Mom, must I finish my homework now? —No, you _____. You may have supper first.
A.
mustn't
B.
needn't
C.
can't
D.
above is all right
【单选题】— Mom, must I finish my homework now? — No, you ______. You may have supper first.
A.
mustn’t
B.
needn’t
C.
can’t
【简答题】大风障畦又分()和()两种。完全风障高为()，并夹附高()左右的披风，披风较厚。春季防风的有效范围是()左右。简易风障()只设置一排篱笆，高度()，防风效果较差。
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