控制测量的实质是在测区选定若干个有控制作用的控制点,按一定的规律和规范要求布设成几何图形或折线,测定控制点的平面位置和高程。()
参考答案:对
阅读理解。(每小题2分,共10分)
I'm a Chinese(中国的) girl. My name is Li Ying. I'm twelve. I'm in No. 1 Middle school(第一中学). Chen Hong is my friend(朋友). She is nine. Mr Wu is my Chinese teacher(老师) and Miss Zhao is my English teacher.
小题1:Li Ying is a _______ girl.
A.Chinese
B.English
C.Japanese
D.England小题2:Chen Hong is ___________.
A.seven
B.nine
C.eight
D.ten小题3:My Chinese teacher is _________
A.Mr Chen
B.Miss Zhao
C.Mr Wu
D.Mr Wang小题4:My English teacher is _________
A. Miss Wu
D.Mr Wang小题5:Li Ying and Chen Hong are________
A.teachers
B.friends
C.boys
D.English
将下列各组物质混合后溶于水,得到无色溶液的是( )
A.KNO3、ZnCl2、Na2SO4
B.NaOH、KNO3、CaCO3
C.CuSO4、NH4Cl、ZnCl2
D.CaCl2、Na2CO3、KCl