_________(59)A.exercise B.training C.strength D.m

59._________A. rulesB. proceduresC. regulationsD.

_________(64)A.exercise B.examinationC.infection

59._________A.. creativityB. reliabilityC. intell

59._________A. specialistB. assistantC. supporter

59._________A.. monumentsB. graveyardsC. tabletsD

图示结构 其弯矩大小为______。 A.MAC=Ph/4 MBD=Ph/4 B.MAC=-Ph/2 MBD=Ph/4 C.MAC=Ph/4 MBD=Ph/2 D.M