问题
单项选择题
After using a C02 portable extinguisher,it should be().
A.put back in service if some CO2 remains
B.hydrostatically tested
C.retagged
D.recharged
答案
参考答案:D
After using a C02 portable extinguisher,it should be().
A.put back in service if some CO2 remains
B.hydrostatically tested
C.retagged
D.recharged
参考答案:D