户外试验应在良好天气情况下进行,且空气相对湿度不能高于()%
参考答案:80
—What does your friend look like?
— .
A .He is tall. B. She is a kind girl.
C .She likes music. D She has good looking.
《神华集团井工煤矿本质安全管理考核评分标准》规定,压力容器上均贴有(),并有压力容器定期打压试验的标识。
A.压力容器合格证
B.出厂检验合格证
C.合格证
D.压力检验合格证