This novel can make you laugh and cry at _____ same time. [ ]
A. a
B. an
C. the
D. /
答案:D
关于符合需要进行矿井水文地质补充勘探条件的说法,正确的是()。
A.原勘探工程量不足
B.地质勘探资料质量低,不满足要求
C.矿井开拓延深,或扩大井田范围需要
D.井巷工程穿越强含水层,工程需要
E.水文地质条件较原勘探报告复杂
Electric generators can be protected against overload().
A.With switches
B.With a governor on the engine
C.With fuses or circuit breakers
D.By using heavy wire