暗龙骨饰面板安装双层石膏板时，面层板与（）的接缝应错开，并不得在同一龙骨上接缝。
A．次龙骨
B．基层板
C．端部板
D．模板
参考答案：D
The Cognitive Approach gives importance to the learner' s active part in the process of using and learning a language, particularly in the learning of______.
A. rules of spelling B. rules of word-formation C. rules of pronunciation D. rules of grammar
道路旅客运输计价类别可分为( )。
A．公路类别
B．旅客类别
C．营运类别
D．车辆类别
E．全票和半票
