单项选择题
A.the port state
B.the shipping company
C.the coastal state
D.the flag state
单项选择题 The Master should call （） for permission to use chemical agents in response to oil pollution into sea.
单项选择题 In the event of minor emergencies when the machinery spaces unattended （） will be informed of malfunction in the machinery by his cabin monitor.
单项选择题 UMS are mainly unattended overnight and during this time （） should have control of the main engine.