The glass works in 1959.
A.were set up
B.was set up
C.were put up
D.were built
B
张洁的买卖行为是否有效
正态分布曲线下,横轴上从均数μ到μ+1.96σ的面积为
A.95%B.45%C.97.5%D.47.5%E.48.8%