单项选择题
A.testing all alarm and detection systems
B.breaking out and using the vessel's emergency equipment
C.participation by selected crew members
D.one person putting on protective clothing，if the vessel is so equipped
单项选择题 Each emergency generator on a mobile offshore drilling unit，when tested，must be run under a full load for at least（）.
单项选择题 During the towing of a survival craft，a lookout should be on station to（）.
单项选择题 Coast Guard regulations require that all of the following emergencies be covered at the periodic drills on a fishing vessel EXCEPT（）.