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【判断题】
399自锁机构的作用是:防止自动换档和自动脱档。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】The car will be guided by a differential GPS system that corrects errors arising in global positioning satellite signals（）they travel through the ionosphere and troposphere.
A.
as
B.
that
C.
what
D.
where
【多选题】CATV is a short way of saying “community antenna( 天线 ) television.” But “cable television” is the term most people use. Cable television allows 46 to receive TV programs that they cannot pick up with ...
A.
follow F. special K. money
B.
into G. empty L. charge
C.
move H. for M. cost
D.
regular I. reach N. viewers
E.
from J. watchers O. extra
【多选题】活动式地毯铺设一般适用于下列()种情况：
A.
装饰性的工艺地毯一般采用活动式铺设，因为大部分装饰性地毯属于工艺地毯，主要是起装饰作用。
B.
方块地毯一般是不加任何固定的，平放在基层上即可。
C.
在人活动不是很频繁的部位，采用活动式铺设。
D.
有其他附带固定办法时。
【单选题】A 56Kbps Modem is a divice that translates the ( )aignals from your computer into analog signals that can travel over a standard phone line, and it can sends data at 56,000 bits per second.
A.
analog
B.
voice
C.
digital
D.
mouse
【简答题】放大器的静态工作点过高可能引起#tk#失真,过低则可能引起截止失真。
【单选题】What happens to signals as they travel the length of the medium?
A.
They decode.
B.
They amplify.
C.
They attenuate.
D.
They implode.
【简答题】放大器的静态工作点过高可能引起 失真,过低则可能引起 失真。分压式偏置电路具有自动稳定 的优点。
【单选题】A 56Kbps Modem is a device that translates the ( ) signals from your computer into analog signals that can travel over a standard phone line, and it can sends data at 56,000 bits per second.
A.
analog
B.
voice
C.
digital
D.
mouse
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