Any vessel in need of carring out deck washing must be()by the department concerned beforehand.
A、requested
B、allowed
C、approved
D、inquired
A、requested
B、allowed
C、approved
D、inquired
A、any sailing vessel with propelling machinery B、any vessel propelled by machinery C、any sailing vessel with or without machinery for propelling D、any sailing vessel with propelling machinery not in use
A、Vessels nearer the distress vessel acknowledge receipt B、Vessels nearer the distress vessel fail to acknowledge receipt C、Even you have not reveived the distress D、Even the vessel in distress expressly prohibit you from providing any salvage service
A、Any aircraft designed to maneuver on the water B、A vessel engaged in dredging,surveying or underwater operations C、A vessel under sail provided that propelling machinery is not used D、A small vessel sailing at night
A、stay near the middle of the channel B、keep to the starboard side of any vessels you meet C、exchange whistle signals with any other vessels in the channel D、keep to the side of the channel which lies to your starboard