题目内容

由于GIS的数据通常容量较大,网络宽带的数据传输能力将是GIS发展过程中的瓶颈问题。( )

A. 对
B. 错

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世界上最早的卫星导航系统是美国的子午仪导航系统。( )

A. 对
B. 错

GPS可在24小时内任何时间进行观测,但会受到刮风、下雨、下雪等气候的影响。( )

A. 对
B. 错

Little _____ about him when I first met him in that company.

A. have I known
B. had I known
C. do I know
D. did I know

At no time, and under no circumstances _____ the first to use nuclear weapon.

A. China will be
B. will be China
C. will China be
D. shall China be

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