单项选择题
The NAVTEX receiver can be mounted on（）.
A.on the bridge B.in the coast station C.on the forecastle D.on starboard side
单项选择题 Ships at sea are in urgent need of MSI because they are（）various kinds of danger.
单项选择题 In the GMDSS, MSI broadcasts will be made on two dedicated systems:（）and（）.
单项选择题 International SafetyNet and Navtex Services promulgate MSI by means of（）.
