第8题:[多选题]( )属于化学爆炸。 A. 压力容器爆炸 B. 粉尘爆炸 C. 烟花爆竹爆炸 D. 可燃气体爆炸 参考答案:BCD
第9题: [单项选择]The indication of a slipping anchor is a(n)(). A. decrease in mooring line length B. increase in the opposite amperage C. increase in the opposite line tension D. decrease in mooring line tension and amperage 参考答案:D