浸润型膀胱癌治疗失后最常见的失败原因是()
A.远处转移40%~85%
B.远处转移30%
C.局部复发80%
D.局部复发和远处转移各30%
E.局部复发30%~50%
参考答案:E
往该B树中插入关键码72后,该B树的第2层的结点数为______。
A.6
B.7
C.8
D.9
Brian is Paul’s father. In January this year, Paul orally agreed with Brian to decorate Brian’s apartment at cost. Subsequently, they signed a written agreement, which reflected all the terms that they had agreed. In April, Paul completed the decoration. However, Brian has refused to pay to Paul the cost.Required:In relation to contract law, advise Paul as to whether he can commence legal action against Brian to recover the cost. (10 marks)