单项选择题
The bridge should inform the engine room before passing through congested or shallow waterway（）
A.24 hours B.2 hours C.1 hours D.15 minutes
单项选择题 During the PSC inspection, under the provisions of SOLAS 74, which one may not be regarded as clear grounds for ships’ detainment?（）
单项选择题 During sea trial, the main engine well be kept run at load（）
单项选择题 During the dock repair, should be measured firstly before tail shaft drawn out（）
