测站点0与观测目标A、B位置不变,如仪器高度发生变化,则观测结果()。
A、竖直角改变
B、水平角不变
C、水平角和竖直角都改变
D、水平角和竖直角都不变
参考答案:A, B
The two international companies reached an agreement, which was based on their talks.
A.initial
B.firstly
C.initially
D.originally
与吸烟关系最密切的肺癌是()
A.鳞状上皮细胞癌
B.小细胞未分化癌
C.大细胞未分化癌
D.腺癌
E.细支气管肺泡癌