单选题Which of the fire extinguishers listed is to be weighed annually and sent ashore for recharging if the weight loss exceeds 10% of the weight of a full charge?（）AFoamBSoda acidCDry chemicalDCarbon dioxide
单选题
Which of the fire extinguishers listed is to be weighed annually and sent ashore for recharging if the weight loss exceeds 10% of the weight of a full charge?（）
A
Foam
B
Soda acid
C
Dry chemical
D
Carbon dioxide
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