下列对变形缝的描述正确的是()
A. 伸缩缝需要从基础底面到屋顶全部断开,贯穿建筑物全高
B. 沉降缝是为了防止建筑构件因为地基不均匀沉降使房屋出现裂缝而设置的
C. 防震缝是从基础顶面到屋顶断开,贯穿建筑物全高
D. 变形缝的宽度均为50-70mm
The first main point the speaker talks about is ________.
A. what personality means
B. when a person’s personality starts to develops
C. how to express one’s personality
D. how to solve personality problems
People can be roughly put into ________.
A. 5 categories
B. 4 categories
C. 3 categories
D. 2 categories
With the aid of knowledge about personality, we can ________.
A. provide more help to each other
B. conduct some research on our own
C. improve our relationship with others
D. have better communication with others