政治体制改革要更加注重发挥()在国家治理和社会管理中的重要作用,维护国家法制统一、尊严、权威,保证人民依法享有广泛权利和自由。
A.法治
B.思想统一
C.政府机构
参考答案:A
The enrollments at College X and College Y both grew by 8 percent from 1980 to 1985. If the enrollment at College X grew by 800 and the enrollment at College Y grew by 840, the enrollment at College Y was how much greater than the enrollment at College X in 1985 ?()
A.400
B.460
C.500
D.540
E.580
何谓混合床?试说明其工作原理。