据地下水化学成分的成因类型,可将地下水分为溶滤水、()、和内生水。
A、地面渗水
B、沉积水
C、包气带水
D、承压水
参考答案:B
一 I _____ to make a decision for myself. What should I do?
一 If I _____ you, I'd talk with my parents. [ ]
A. don't allow; am
B. won't allow; was
C. am not allowed; were
D. weren't allowed; be
市场调查的方式中,()是通过发放书面问卷的方式,采集顾客的信息,分析研究
A.问卷调查
B.行业信息
C.抽样访问
D.市场观察