问题
单项选择题
《煤矿井巷工程质量检验评定标准》规定,机电硐室采用混凝土支护时,其净高(腰线至顶、底距离)和净宽(中心至任一帮的距离)偏差()时为优良。
A.0~+25mm
B.0~+30mm
C.0~+10mm
D.0~+35mm
答案
参考答案:B
《煤矿井巷工程质量检验评定标准》规定,机电硐室采用混凝土支护时,其净高(腰线至顶、底距离)和净宽(中心至任一帮的距离)偏差()时为优良。
A.0~+25mm
B.0~+30mm
C.0~+10mm
D.0~+35mm
参考答案:B
完形填空。 | |||
1 . My 2 is Li Ying I 3 14 year old. 4 is my friend, Mary. 5 is a girl. She 6 from Australia. Her mother is a 7 . Her father is a 8 , 9 . They work in a big school. Mary is a 10 student. | |||
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