下列哪一项是肿瘤()
A.错构瘤
B.动脉瘤
C.室壁瘤
D.创伤性神经瘤
E.骨软骨瘤
参考答案:E
在公钥密码体制中,公开的是( )。
A.公钥和私钥
B.公钥和算法
C.明文和密文
D.加密密钥和解密密钥
The further falling of the stock market as reported today has _______ a fresh wave of selling.
A.given off
B.set off
C.put off
D.got off