單項(xiàng)選擇題If you wished to transmit a message by voice concerning the safety of navigation,you would preface it by the word().

A.Mayday
B.Pan-pan
C.Securite
D.Safety


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1.單項(xiàng)選擇題The expression DROP ANCHOR means().

A.hold anchor
B.leave anchor
C.let go anchor
D.weigh anchor

2.單項(xiàng)選擇題Tripping defects in anchors frequently occur in().

A.deep water
B.shallow water
C.stiff soils
D.soft soils

3.單項(xiàng)選擇題There is plenty of()at this area.

A.a room
B.room
C.rooms
D.the room

4.單項(xiàng)選擇題What are symptom(s) of a ruptured appendix?()

A.Dilated pupils and shallow breathing
B.Diarrhea and frequent urination
C.Muscle tenseness in almost the entire abdomen
D.Extreme sweating and reddening skin

5.單項(xiàng)選擇題To reduce mild fever the MOST useful drug is().

A.bicarbonate of soda
B.paregoric
C.aspirin
D.aromatic spirits of ammonia

6.單項(xiàng)選擇題What is the primary purpose of a splint applied in first aid?()

A.Control bleeding
B.Reduce pain
C.Immobilize a fracture
D.Reset the bone

7.單項(xiàng)選擇題The use of the danger signal().

A.replaces directional signals
B.makes the other vessel the stand-on vessel
C.indicates doubt as to another vessels actions
D.is the same as a MAYDAY signal

8.單項(xiàng)選擇題Fog forms when the air().

A.is 50% water saturated
B.is 90% water saturated
C.temperature is greater than the dew point temperature
D.temperature is equal to,or below the dew point temperature

10.單項(xiàng)選擇題The radiotelegraph alarm signal is().

A.SOS sent three times
B.ten one-second dashes with a four-second interval between them
C.twelve four-second dashes with a one-second interval between them
D.twelve one-second dashes with a short interval between them