一般情况下,盲板直径Ф1000mm的盲板,厚度宜选8mm。
参考答案:对
— Are they about to have dinner?
— Yes, it____ in the dining room.
[ ]
A. is being served
B. is served
C. is serving
D. serves
ERG理论与马斯洛需要层次论观点不一致之处是( )。
A.当某种需要得到满足后,可能去追求更高层次的需要,也可能没有这种上升趋势B.当较高级需要受到挫折时,可能会降而求其次C.ERG理论不强调需要层次的顺序D.某种需要在得到基本满足后,其强烈程度不一定减弱,还可能会增强