上颌第一磨牙面形态中哪一点是错误的()。
A.斜方形
B.近颊角及远舌角是锐角
C.可见斜嵴
D.5条发育沟
E.近中窝大于远中窝
参考答案:D
His mother kept telling him to____ his manners at the party.So he became impatient.
A.mind
B.notice
C.watch
D.care
大机组自动保护系统,()不能造成紧急自动停车。
A.润滑油压力低
B.机组故障
C.电机跳闸
D.流量低