下列哪项不是皮肤基底细胞癌的临床特点()
A.恶性程度低,极少转移
B.肿块呈黑色,质地较硬,溃疡呈鼠咬状边缘
C.多见于头面部和下肢
D.对放射线敏感
E.生长快
参考答案:E
________Chinese culture with overseas cultures is a challenging job, but you will learn a lot from it.
A.Comparing .
B.Having compared .
C.Compared .
D.Compare .
在Internet上用于收发电子邮件的协议是______。
A.TCP/IP B.IPX/SPXC.POP3/SMTP D.NetBEUI