单项选择题 After arrived at the port, if it is necessary to lift the piston out and inspect the M-E temporarily, the chief engineer should report the situation to the（）, and the operation could be performed only after having the approvement of relevant department.

单项选择题 The duty officer and engineer should obey regulation for the speed of the M-E that established by （）

单项选择题 When anchoring in open anchorage, chief engineer should consult with captain （）