航海英語航海儀器使用說明書單項(xiàng)選擇題每日一練(2019.01.21)

來源：考試資料網(wǎng)

1 If a magnetic compass is not affected by any magnetic field other than the Earth’s，which statement is TRUE?（）.

2 The radar component that generates the radio-frequency energy in the form of short powerful pulses is which of the following?（）.

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3 An electronic depth finder operates on the principle that（）.

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4 A FICTIVE LINE DISPLAYED ON THE RADAR SCREEN SEPARATING THE FAIRWAY FOR INBOUND AND OUTBOUND VESSELS SO THAT THEY CAN SAFELY PASS EACH OTHER defines（）.

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5 Compass error is equal to the（）.

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