我国对部分旧机电产品的进口实行严格控制,分别实施()管理
A.进口许可证
B.自动进口许可证
C.废物进口许可证
D.禁止进口
参考答案:A, B, D
To deal with the global financial crisis, China has _____ a string of forceful measures over the past months. [ ]
A. worked out
B. found out
C. turned out
D. made out
在利用分层总和法计算地基沉降量确定地基沉降计算深度时,对于一般土采用的应力比是( )。
A.附加应力:自重应力=1:2
B.附加应力:自重应力=0.1:0.2
C.附加应力:自重应力=2:1
D.附加应力:自重应力=0.2:1