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單項(xiàng)選擇題

A single line of position combined with a dead-reckoning position results in a(n)（）.

A.estimated position
B.assumed position
C.fix
D.running fix

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單項(xiàng)選擇題

A single barometric pressure reading of 28.60 indicates（）.

A.rapidly improving weather
B.deteriorating weather
C.a severe low pressure system
D.fair weather and calm

單項(xiàng)選擇題

A signal indicating zone time is preceded with the letter（）.

A.L
B.N
C.T
D.Z

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