【单选题】正确计算和应用相对指标的前提条件是( )
【多选题】How do American parents rear their children?
A.
They are not strict with their children on things like discipline
B.
They ask their children to do some housework
C.
They think building self-esteem is important for children
D.
They want to keep their children happy
【多选题】How do American parents rear their children?
A.
They are not strict with their children on things like discipline
B.
They ask their children to do some housework
C.
They think building self-esteem is important for children
D.
They want to keep their children happy
【简答题】How long do children usually stay at university in the man’s country?
【判断题】在映射文件中, 元素是映射文件的根元素,其他元素都是它的子元素()
【单选题】塑性材料经过冷作硬化处理后,它的( )将得到提高