单项选择题
The Captain’s accommodation comprising rooms certified for his exclusive use may be（）in the measurement of vessel’s tonnage.
A.Deducted B.Added C.Forfeited D.Used
单项选择题 The deadweight of a bulk carrier consists of（）.
单项选择题 The extension of the after part of the keel in a single-screw vessel upon which the stern post rests is called the（）.
单项选择题 For existing ships，（）is not an improvement to safety.
