转K4型摆动装置摇动座支承内圆半径弧面与样板间隙大于（）或裂损时须更换。
A.lmm
B.1.5mm
C.2mm
D.3mm
参考答案：B
___in the regulations that one should not tell other people the password of your email account.
A．What is recommended
B．What recommend
C．It is recommended
D．It recommend
A．U=vBl，流过固定电阻R的感应电流由b到d
B．U=vBl，流过固定电阻R的感应电流由d到b
C．U=vBl，流过固定电阻R的感应电流由b到d
D．U=vBl，流过固定电阻R的感应电流由d到b
vBl
vBl