单项选择题
Between April and November, squalls（）as Sumateras（）in Malacca Strait in the late afternoon or overnight and（）E to affect the W coast of Malaysia and Singapore Island.
A.known, developing, move B.known, developed, move C.known, develop, moving D.known, develop, move
单项选择题 You are underway in thick fog.You have not determined if risk of collision exists.Which statement is true?（）
单项选择题 Who can suggest changes to the SMS?（）
单项选择题 Which statement is TRUE when comparing cold and warm fronts?（）
