在逻辑运算中,运算的先后顺序是( )。
A.NOT OR-AND
B..NOT-AND-OR
C.AND-OR-NOT
D.OR-AND-NOT
参考答案:B
_____ surprised me most was that he made the same mistake again.
A.It
B.That
C.What
D.Which
哪个牙具有支撑口角的作用
A.中切牙B.上颌尖牙C.第三磨牙D.上颌第一磨牙E.上颌第一前磨牙