在小区重选的判决条件中，小区重选定时器Treselection的取值范围是（）s？
A.0~31
B.0~45
C.0~60
参考答案：A
New words selected by the dictionary are closely linked to social phenomena. Instead of being merely words, they are ________ cultural symbols.
A．both
B．neither
C．either
D．all
铸造支托长度约为前磨牙近远中径的（）
A.1／4
B.1／3
C.1／2
D.2／3
E.3／4
支托长度约为前磨牙近远中径的（）