路基填筑方式一般包括()。
A.水平分层填筑
B.填料混合
C.混合填筑
D.任意分层
E.竖向填筑
参考答案:A, C, E
To show our respect, we usually have to take our gloves off ________ we are to shake hands with.[ ]
A. whichever
B. whenever
C. whoever
D. wherever
隐形义齿安插铸道时,铸道与蜡型长轴的角度应为()
A.30°
B.45°
C.60°
D.90°
E.135°