He gets an interesting book _______ his uncle. [ ]
A. for
B. of
C. from
D. to
答案:C
大偏心受压构件的承载力随着M和N的变化也将变化,下列论述中正确的是哪一个?()
A.M不变时,N越小越危险
B.M不变时,N越大越危险
C.N不变时,M越小越危险
D.B和C
肾气虚型月经先期的治法是()
A.疏肝解郁,清热调经
B.补肾益气,固冲调经
C.补肾益气,养血调经
D.清热泻火,凉血调经
E.理气行滞,活血调经