单项选择题
In a weather report,Z stands for（）.
A.zone time B.zulu time C.Greenich Mean Time D.zone standard time
单项选择题 In admiralty sailing directions, bands is the word used to indicate（）marking.
单项选择题 In admiralty sailing directions, stripes is the word used to indicate（）marking.
单项选择题 In anchoring orders, up and down means（）.
