肾脏占位性病变,下列哪项是最常见的()
A.肾细胞癌
B.血管平滑肌脂肪瘤
C.肾腺瘤
D.单纯性肾囊肿
E.肾盂癌
参考答案:D
While ________ as a volunteer at the Beijing Olympics, she made friends with the famous tennis player.[ ]
A.being served
B.serving
C.having served
D.served
医疗单位使用毒性药品,每张处方不得超过
A.2日常用量
B.3日常用量
C.2日极量
D.3日极量
E.7日常用量