樟属植物的花药裂开方式为()
A.横裂
B.纵裂
C.瓣裂
D.孔裂
参考答案:C
In relation to the law concerning company formations:
(b) Explain the remedies available to a company for breach of duty by a promoter. (6 marks)
系统通过验证用户身份,进而确定用户的权限,这项服务是()
A.报文认证
B.访问控制
C.不可否定性
D.数据完整性