保证安全的组织措施有（）。
A.工作票制度
B.工作许可制度
C.工作监护制度
D.工作安排制度
参考答案：A, B, C
智力水平越高，心理水平越高。（）
A celestial body will cross the prime vertical circle when the latitude is numerically（）.
A.greater than the declination and both are of the same name
B.less than the declination and both are of the same name
C.greater than the declination and both are of contrary name
D.less than the declination and both are of contrary name
