单项选择题

BPS2000D钞票处理器主传动皮带带一个出钞模块F2的传动张力2天后测量参考值为()

A.121+10Hz约等于9daN
B.133+10Hz约等于9daN
C.152+10Hz约等于9daN
D.172+10Hz约等于9daN