单项选择题

使用干粉灭火器灭火时应该对准火焰的哪个部位？

A．火焰的后方
B．火焰的根部
C．火焰的上方
D．火焰前方
<上一题 目录 下一题>
热门 试题

单项选择题
The summer demand for hotel accommodation in London comes mainly from foreign tourists. Demand for hotel rooms in London in summer could be reduced by a fall in the price or value of which of the following? 1 US dollars 2 Aeroplane tickets 3 Sterling
A．Item 1 only
B．Items 1 and 2 only
C．Items 2 and 3 only
D．Item 3 only
单项选择题
菜单调用圆角命令的步骤是选择修改 （ ）命令 A、圆角 B、倒角 C、对象 D、阵列
相关试题