气瘤相当于西医病名:()
A.脂肪瘤
B.皮脂腺囊肿
C.神经纤维瘤
D.静脉曲张
E.皮肤血管瘤
参考答案:C
All the children will have fun the farmers with the farm work.[ ]
A. helping
B. helps
C. to help
D. help
设积分区域Ω:x2+y2≤R2,0≤z≤1,则三重积分()
A.A
B.B
C.C
D.D