單項選擇題A snag or other underwater obstruction may form a（）.

A.V-shaped ripple with the point of the V pointing upstream
B.V-shaped ripple with the point of the V pointing downstream
C.small patch of smooth water on a windy day
D.smoothing out of the vessel's wake


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1.單項選擇題A shipmate suffers a heart attack and stops breathing. You must（）.

A.administer oxygen
B.immediately check his pulse and start CPR
C.make the victim comfortable in a bunk
D.immediately give a stimulant，by force if necesssary

2.單項選擇題A shipmate chokes suddenly，cannot speak，and starts to turn blue. You should（）.

A.perform the Heimlich maneuver
B.make the victim lie down with the feet elevated to get blood to the brain
C.immediately administer CPR
D.do nothing until the victim becomes unconscious

3.單項選擇題A ship must have on board a first-aid kit that is approved by the（）.

A.Minerals Management Service
B.Occupational Safety and Health Administration
C.Mine Safety and Health Administration
D.American Bureau of Shipping

5.單項選擇題A seaman has a small，gaping laceration of the arm that is not bleeding excessively. What can be done as an alternative to suturing to close the wound?（）

A.Wrap a tight bandage around the wound
B.Apply a compression bandage
C.Use temporary stitches of sail twine
D.Apply butterfly strips，then a sterile dressing