世界上最淡的海是波罗的海,它属于()洲 A.亚洲 B.欧洲 C.北美洲 发布时间:2018-02-13 09:59 │ 来源:www.tikuol.com 题型:单项选择题 问题: 世界上最淡的海是波罗的海,它属于()洲A.亚洲B.欧洲C.北美洲
题型:单项选择题 Trust is needed in the whole society, which requires parents to obey their own rules and set a good example _______ children can trust them.A.soon afterB.as ifC.in caseD.so that 查看答案
题型:单项选择题 在填埋库区底部铺设高密度聚乙烯(HDPE)土工膜作为防渗衬里时,膜的厚度不应小于( )。A.(A) 0.5 mmB.(B) 1.0 mmC.(C) 1.5 mmD.(D) 2.0 mm 查看答案