飞行程序设计中,DME的测距容差规定为:().
A.到天线距离的1.25%
B.±0.25海里
C.±0.25海里+到天线距离的1.25%
D.取A、B两者的较大值
参考答案:C
Do you still remember _____?[ ]
A. that he said
B. what he said
C. did he say that
D. what did he say
若a和b是一对共轭酸碱对,则它们的离解常数Kθa和Kθa之间的正确关系是()。
A.A
B.B
C.C
D.D