单选题气胀式救生筏自动充气时间,在气温20℃时,应不超过()。A1分钟B2分钟C3分钟D4分钟
单选题
气胀式救生筏自动充气时间,在气温20℃时,应不超过()。
A
1分钟
B
2分钟
C
3分钟
D
4分钟
参考解析
解析:
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