组合机床液压滑台的双矩形导轨适用于精加工，而一山一矩形组合导轨一般用于粗加工。( )
参考答案：错
—Did you ________ any people?
—Yes, there _ _lots of people there. [ ]
A. saw; are
B. saw; were
C. see; are
D. see; were
税法原则是构成税收法律规范的基本要素之一。下列税法原则中与法定性原则存在一定冲突的是( )。
A．实质课税原则 B．税收公平原则C．公众信任原则 D．平等性原则
