图示的力分别对x、y、z三轴之矩为()
图示的力分别对x、y、z三轴之矩为()
A.mx(F)=-3P,my(F)=-4P,mz(F)=2.4P;
B.mx(F)=3P,my(F)=0,mz(F)=-2.4P;
C.mx(F)=-3P,my(F)=4P,mz(F)=0;
D.mx(F)=3P,my(F)=4P,mz(F)=-2.4P;
正确答案:A
Tag:图示
时间:2023-01-10 14:51:21