题目内容

Diesel engines driving alternators operating in parallel must maintain set frequency regardless of load changesThe governor characteristic used to accomplish this is known as ()

A. actuation
B. sensitivity
C. compensation
D. thrust shaft

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某一小区5个载波(不开EDGE),SDCCH=5,若采用信令压缩,压缩因子为4,那么需要()个传输设备若采用信令复用(MULTIPLEX16),那么需要()个传输设备

A. 13,10
B. 12,10
C. 11,10
D. 11,11

A preferred-channel buoy will show a().

A. white light whose characteristic is Morse (A)
B. group-occulting white light
C. composite group-flashing (2 + 1) white light
D. composite group-flashing (2 + 1) red or green light

航空运单代表货物所有权,可以通过背书转让。

A. 正确
B. 错误

典型的软件维护费用与开发费用的比例为()。

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