單項選擇題

Which statement concerning GPS is TRUE（）.

A.It cannot be used in all parts of the world
B.There are 12 functioning GPS satellites at present
C.It may be suspended without warning
D.Two position lines are used to give a 2D fix

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單項選擇題

Which one of the followings does not limit the effective range of radar（）.

A.Pulse width
B.Pulse repetition frequency
C.Peak power
D.Target brightness

單項選擇題

Which of the following statements is TRUE regarding crane operations（）.

A.Radio communications allow the crane operator to disregard the use of hand signals
B.The crane operators and signalman must be familiar with the correct hand signals
C.The forward cranes can be operated from the bridge
D.The aft cranes can be operated from the aft steering station

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Which statement concerning GPS is TRUE（）.

你可能感興趣的試題

Which one of the followings does not limit the effective range of radar（）.

Which of the following statements is TRUE regarding crane operations（）.

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