單項(xiàng)選擇題You should plot your dead reckoning position at().

A.every fix or running fix
B.every course change
C.every speed change
D.All of the above are correct


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1.單項(xiàng)選擇題You will extinguish a fire when you remove().

A.nitrogen
B.oxygen
C.sodium
D.carbon dioxide

2.單項(xiàng)選擇題You’d better()your course to port to avoid collision.

A.to alter
B.alter
C.altering
D.altered

3.單項(xiàng)選擇題Your fireman’s outfit includes a(n)().

A.chemical protection face shield
B.approved work vest
C.self-contained breathing apparatus
D.marlinspike