关于军事高技术突出的特点的错误叙述是（）。
A.信息超前
B.高度保密
C.双重作用
D.突袭性效果
参考答案：A
China is now the third country to conduct spacewalk, the other two _______ that are the former Soviet
Union and the US.
[ ]
A. to achieve
B. having achieved
C. to have achieved
D. achieving
下列( )是初始地籍测量的内容。
A．地籍平面控制测量
B．地籍细部测量
C．界址调查
D．埋设界标
E．权属调查
