双料双色注塑成型是种较新的注塑技术，较单色注塑后印上其他颜色为优
参考答案：对
—Thank God. It's Friday again. A nice weekend.
一_______. [ ]
A. Me too
B. Yes, I'll be free then
C. That's all right
D. The same to you
氧气转炉烟道上的氧枪孔与加料口，应设可靠的液封。（）
