單項(xiàng)選擇題

The range of a SSB transmission is MOST affected by（）.

A.atmospheric noise and radiated power
B.the frequency band selected and time of day or night
C.interference and position of the moon
D.radiated power and nearness to shore

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單項(xiàng)選擇題

The light rhythm of Morse (A) is shown on（）.

A.preferred-channel buoys
B.starboard- or port-side buoys
C.special marks
D.safe water buoys

單項(xiàng)選擇題

The following（）is a standard phrase.

A.You may enter fairway
B.You should enter fairway
C.ANSWER. It is permitted to enter fairway
D.You could enter fairway

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The range of a SSB transmission is MOST affected by（）.

你可能感興趣的試題

The light rhythm of Morse (A) is shown on（）.

The following（）is a standard phrase.