对影响社会事实发生、变化的主客观因素从其因果联系上加以说明,这种社会学的功能是( )。
A. 描述性功能
B. 解释性功能
C. 预测性功能
D. 规范性功能
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下列哪项不是液体动压油膜形成的必要条件？（ ）
A. 相对运动表面间必须形成收敛的楔形间隙
B. 两运动表面间必须有一定的相对滑动速度，其运动方向必须使润滑油从大口流进、小口流出
C. 润滑油必须有一定的粘度，且供油要充分
D. 轴瓦上不能开油孔或油沟
The test paper we did last time was ____ easier than we had expected.
A. more much
B. much more
C. many more
D. more many
The sooner you begin,____ you will finish it.
A. the quicker
B. the more quick
C. the more quickly
D. the quickly
Mary caught the last train from town;but Harry returned home even ____.
A. later
B. late
C. earlier
D. early
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