烘丝前喂料机的作用是贮存一定的物料，起到（）缓冲和调节的作用。
A、工段间
B、机台间
C、车间
D、工序间
参考答案：D
不含羧基的非甾体抗炎药是
A．对乙酰氨基酚 B．萘普生C．吡罗昔康 D．双氯芬酸E．吲哚美辛
The athlete's years of hard training ________ when she finally won the Olympic gold medal.[ ]
A. went on
B. got through
C. paid off
D. ended up
