JB3051-82规定,数控机床坐标轴和方向是基于()固定,()移动。
参考答案:工件;刀具
Price discrimination is most likely an attempt by a monopoly to:()
A. resell a product.
B. capture a producer surplus.
C. capture a consumer surplus.
—Excuse me, is Michael in black pants now?
—No. He's in ____ coat and ____ pants now.[ ]
A. black; a white
B. a black; white
C. black; white
D. a black; a white