单项选择题
A.increasing the righting moment
B.decreasing the vessel's displacement
C.increasing the reserve buoyancy
D.shifting the CG (center of gravity) off center
单项选择题 A fixed carbon dioxide extinguishing system for a machinery space，designed WITHOUT a stop valve in the line leading to the protected space，is actuated by（）.
单项选择题 A fishing vessel displaying the lights shown is（）.
单项选择题 A fishing vessel casualty must be reported to the Coast Guard if it involves（）.