为了有利于补料,浇口应设置在制品的什么部位?()
A、壁厚较厚的地方
B、壁厚较薄的地方
C、壁厚变化的地方
D、制品的侧边
参考答案:A
Vehicle designers are well aware that they need to ______ the idea of cars that have a low environmental impact.
A.end up with
B.put up with
C.keep up with
D.come up with
重复性实验是考查候选方法的()
A.随机误差
B.方法误差
C.操作误差
D.恒定系统误差
E.比例系统误差