Cumulonimbus clouds are formed by（）.

Deficient oxygen content inside a chain locker can be detected with（）.

Conventional anchors are least likely to hold in a bottom consisting of（）.

Concerning a celestial observation，the azimuth angle is measured from the principal vertical circle to the（）.

Changing rescuers while carrying out artificial respiration should be done（）.

Consideration should be given in planning for the mooring orientation in a new location so that in adverse weather a crane is available to off-load the supply vessel on what side of the unit?（）

Coiling new rope against the lay，bringing the lower end up through the center of the coil，then coiling with the lay，in order to remove the kinks，is known as（）.

Denebola is found in what constellation?（）

Concerning the identification signal for a pilot vessel，in fog，which statement is TRUE?（）

Compared to a low pressure system，generally the air in a high is（）.