An icebreaker may use the code letter “K” to remind ships of their obligation to listen continuously on their radio. This signal may be made by any of the following EXCEPT（）.

An icebreaker assisting a vessel through an ice field would display a visual signal consisting of the code letter “E” (Echo) to signify that “（）”.

All portable fire extinguishers must be capable of being（）.

All of the following information concerning lighted aids to navigation may be read directly from the Light List EXCEPT the（）.

All personnel on board a vessel should be familiar with the rescue boat’s（）.

All of the following vessels are “restricted in their ability to maneuver” EXCEPT a vessel （）.

AMVER is a system which provides（）.

An advantage of the Christmas Tree towing method is to（）.

An example of a grade C product is（）.

An “ABC” dry chemical fire extinguisher would be LEAST effective against a fire in（）.