下列不属于现实世界术语的是()
A.特征
B.对象
C.总体
D.实体
参考答案:D
The details of any language system is passed on from one generation to the next through (), rather than by instinct.
A.learning
B.teaching
C.books
D.both A and B
通过间隔抢修坝垛,可()。
A.截渗
B.守住大溜顶冲点
C.将大溜挑离堤岸
D.防冲或减轻冲刷
E.控制坍塌