A.25.38;12.12B.25.37;12.12C.25.38;12.13D.25.37;12.13
A.0.2%和0.03% B.-0.026%和0.02% C.0.2%和0.02% D.0.025%和0.03%
A.隨機(jī)性 B.典型性 C.代表性 D.適時(shí)性