单项选择题
A.0.15% B.0.1% C.0.2% D.0.12%
A.0.1% B.0.12% C.0.15% D.0.2%
A.先装入中舱 B.后装入两舷侧舱 C.先装人两舷侧舱 D.后装人中舱