单项选择题

In those days, the Portuguese (葡萄牙人) were trying to reach India by sailing round Africa, but Columbus _____ prove that India could be reached by sailing west.

A.was determined in
B.determined
C.was determined to
D.determine

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整体小开口墙在水平荷载作用下，墙肢截面的正应力可以看作是由()部分弯曲应力组成的。

A.1
B.2
C.3
D.4

单项选择题

传统自动变速器主要由()和机械装置组成。

A.控制装置
B.液压装置
C.动力装置
D.变速装置