What does one have to be if he wants to make himself creative according to the author?
A.He should try to be as creative as possible.
B.He may set up a problem and then try to conceive all the possible solutions to it.
C.He should study all the techniques mentioned in the passage and try to use them.
D.He should play a different role from the one he plays now.
第1题
A.GPS馈线接头需要缠绕3层胶带+ 3层胶泥+ 3层胶带防水
B.GPS馈线进入馈线窗或者室外机柜前需要使用馈线接地卡进行接地,并保留滴水弯;
C.GPS馈线在铁塔上的长度超过50米时,每30米增加一处接地;
D.GPS馈线长度为50米,必须要添加放大器
第2题
GPS馈线接地通常采用室内GPS避雷器接地线引出到室外接地铜排上,没有室外馈线接地卡的说法。()
第4题
A.GPS馈线过长影响GPS信号精度,客观条件受限需采用远距离GPS馈线传输时,可使用GPS干线放大器
B.GPS天线应在避雷针的45°保护范围之内
C.GPS频段特殊,不会收到外界干扰
D.GPS天线搜星一般需保证能搜4颗以上星
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