有抗震设防要求的建筑中须设有( )。
A．过梁
B．构造柱
C．变形缝
D．伸缩缝
参考答案：B
It`s on the festival occasion ________the family get together ________he misses his father.
A where; that B which; when C when; that D that; when
API称为( )。
A．数据传输接口
B．应用编程接口
C．模拟传输接口
D．文件传输接口
