当前位置:在线题库搜索>[单选题]A “fifteen-pound” CO2 extinguisher is so called because().的答案是什么?

问题:

[单选题]A “fifteen-pound” CO2 extinguisher is so called because().

A、there are fifteen pounds of CO
B、the container,when full,weighs fifteen pounds
C、the pressure at the discharge nozzle is l5 psi
D、the empty container weighs fifteen pound

参考答案: A