单项选择题
A.Immediately put the rudder over hard right
B.Immediately put the rudder over hard left
C.Immediately put the engines astern
D.Wait until the stern is well clear of the man and then put the rudder over hard right
单项选择题 （）of the following messages is allowed to be transmitted on the radiotelephone without the authority of the Master.
单项选择题 MV SUDAN/MEAN AT 0200UTC IN POSITION 40.44N 141.52E PASSED A DERELICT ABOUT 40 TONS HALF SUBMERGED AND IS DRIFTING. This cable says that she met with possibly（）.
单项选择题 You hear on the radiotelephone the word SECURITE spoken three times. This indicates that（）.