肾癌手术切除后的辅助治疗常选用()
A.放疗
B.动脉化疗
C.全身化疗
D.免疫治疗
E.放疗加化疗
参考答案:D
—Are these ______ tennis rackets?
—No, they aren't. They're ______. [ ]
A. his, her
B. his, hers
C. hers, his
D. yours, mine
芯子如果不烘干,可使铸件产生();
A、缩孔;
B、冷隔;
B、气孔;