Daylight savings time is a form of zone time that adopts the time（）.

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（）.

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

Deck beams on a ship are generally spaced at equal intervals and run（）.

Compared to internal structural plating，the exterior hull plating on a ship is usually（）.

Corrosive liquids and acids should have which kind of label?（）

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

Denebola is found in what constellation?（）

Clean air standards referred to as “Grade D” apply to compressed air for use in（）.

Coast Pilots and navigational charts are kept corrected and up-to-date by using the（）.