After an explosion，repair of emergency machinery and services should be accomplished（）.

Fire protection regulations for towing vessels require that drills be conducted on board the vessel as if there were an actual emergency. Drills include all of the following，EXCEPT（）.

Thirty-five percent of the breaking strength of an anchor cable is generally accepted as the（）.

The radiotelephone urgency signal is（）.

The deck water seal of the inert gas system（）.

In each inflatable liferaft，what equipment is provided to make quick，emergency，temporary repairs to large holes in the raft? （）

A vessel may enter a traffic separation zone（）.

The shear rams of a ship blowout preventer stack are used in emergency well control to（）.

The color of the signal flare sent up by a submarine about to surface due to an emergency condition within the submarine is（）.

During the towing of a survival craft，a lookout should be on station to（）.