A、Z<sub>2sub>Z<sub>3sub>/(Z<sub>2sub>+Z<sub>3sub>) B、Z<sub>1sub>+Z<sub>2sub>Z<sub>3sub>/(Z<sub>2sub>+Z<sub>3sub>) C、Z<sub>1sub>+Z<sub>2sub>+Z<sub>3sub> D、Z<sub>1sub>+(Z<sub>2sub>+Z3)/(Z<sub>2sub>Z<sub>3sub>)
A、Z<sub>2sub>Z<sub>3sub>/(Z<sub>2sub>+Z<sub>3sub>) B、Z<sub>1sub>+Z<sub>2sub>Z<sub>3sub>/(Z<sub>2sub>+Z<sub>3sub>) C、Z<sub>1sub>+Z<sub>2sub>+Z<sub>3sub> D、Z<sub>1sub>+(Z<sub>2sub>+Z3)/(Z<sub>2sub>Z<sub>3sub>)
A、Ez=E<sub>0sub>/(1+z/Rp) B、Ez=E<sub>0sub>/(1-z/R<sub>50sub>) C、Ez=E<sub>0sub>/(1+z/R<sub>50sub>) D、Ez=E<sub>0sub>(1+z/R<sub>50sub>) E、Ez=E<sub>0sub>(1-z/Rp)
A、Z<sub>1sub> B、Z<sub>2sub> C、Z<sub>1sub>+Z<sub>2sub> D、Z<sub>1sub>+Z<sub>2sub>+h<sub>wsub>
A、LOC(a<sub>ijsub>)=LOC(a<sub>11sub>)+i×(i+1)/2+j B、LOC(a<sub>ijsub>)=LOC(a<sub>11sub>)+i×(i+1)/2+(j-1) C、LOC(a<sub>ijsub>)=LOC(a<sub>11sub>)+i×(i-1)/2+j D、LOC(a<sub>ijsub>)=LOC(a<sub>11sub>)+i×(i-1)/2+(j-1)
A、d<sub>1sub>=m<sub>a1sub>q B、d<sub>1sub>=m<sub>nsub>q C、d<sub>1sub>=m<sub>a1sub>Z<sub>1sub> D、d<sub>1sub>=m<sub>nsub>Z<sub>1sub>
A、在图示轮系中,各轮齿数为z<sub>1sub>=10,z<sub>2sub>=40,z<sub>2’sub>=15,z<sub>3sub>=30,z<sub>3’sub>=20,z<sub>4sub>=40。试求传动比i<sub>14sub>,并确定O<sub>1sub>和轴O<sub>4sub>的转向是相同还是相反?
A、i=ω<sub>1sub>/ω<sub>2sub> B、i=Z<sub>2sub>/Z<sub>1sub> C、i=n<sub>1sub>/n<sub>2sub> D、i=d<sub>2sub>/d<sub>1sub>