GM cannot be used as an indicator of stability at all angles of inclination because（）.

A.M is not fixed at large angle

B.there is no M at large angles

C.G is not fixed at large angles

D.there is no G at large angles

自助设备柜员号的设置方式中第（）位为代表分行的两位字母。

A.一

B.二

C.三

D.四