In which situation could a vessel most easily capsize?()
A. Running into head seas
B. Running in the trough
C. Running with following seas
D. Anchored with your bow into the sea
查看答案
列车组中有车辆掉道时,应及时()并向()。
A. 正常运行
B. 停车处理
C. 矿长汇报
D. 调度室汇报
下面有关电气母线和引下线涂漆的目的的叙述错误的是()
A. 区分相序
B. 表示有电
C. 防腐蚀等
D. 便于散热