可倾瓦推力轴承对瓦块的要求是（）。A．各瓦块内弧半径相等 B

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可倾瓦推力轴承对瓦块的要求是（）。

A．各瓦块内弧半径相等

B．各瓦块内弧半径不等

C．各瓦块的厚度相等

D．各瓦块的厚度不等

E．各瓦块背部的曲率半径小于轴承体内孔的曲率半径

答案

参考答案：A, C, E

选择题

1. He is such a man of many ______ that all of us respect him.

A．ability

B．abilities

C．competence

D．Talent

选择题

______ number of overseas reporters registered to cover the 18^th National Congress has seen ______ remarkable increase.

A．A; a

B．The; a

C．A; the

D．The; /