马斯洛需要层次理论中包括()
A.安全需要
B.劳动的需要
C.尊重的需要
D.自我实现的需要
参考答案:A, C, D
According to some doctors,one of the ways to delay the aging process is to make sure that our
brains get enough__________.[ ]
A.assistance
B.sport
C.experience
D.exercise
什么是法兰变送器?