Some radio waves（）the surface of the earth because of its（）.

A、are capable of following / distance

B、can follow / altitude

C、can hardly follow / shape

D、are unable following / angle

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更多“Some radio waves（）the surface of the earth because of its（）.”相关的问题

第1题

[单选题] Echo sounder sends a（） (无线电信号)from the bottom of the ship to the seabed.

A、radio signal B、radio wave C、signal D、signal radio

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第2题

[单选题] The portable radio apparatus means（）.

A、the radio apparatus fitted on the portside B、the radio with a portable equipment C、the radio equipment which is easily movable D、the portable radio with some apparatus

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第3题

[单选题] The portable radio apparatus means（）.

A、the radio apparatus fitted on the portside B、the radio with a portable equipment C、the radio equipment which is easily movable D、the portable radio with some apparatus

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第4题

[] The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.

A、A.on loran charts covering areas where sky waves are used B、B.in the Radio Aids to Navigation，PUB 117 C、C.in the Loran-C Correction Tables D、D.Sky waves cannot be matched to ground waves in LORAN-C to produce a usable reading

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第5题

[单选题] （）is a radio receiver with ablity to sense direction of the incoming radio waves.

A、The echo sounder B、The radar C、The course recorder D、The direction finder

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第6题

[单选题] Bluetooth is a （）technology.

A、Satellite B、Microwave C、Light wave D、Radio Frequency

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第7题

[单选题] There are about 130 prison establishments in England and Wales and some 20 in Scotland,many of which were built in the（）century.

A、16th B、17th C、18th D、19th