心理学的研究要遵循下列哪些原则（）A、客观性 B、系统性 C、发展性 D、教育性

下面哪项不是盆腔炎手术指征（）

A.输卵管积水

B.脓肿破裂

C.药物治疗48～72小时，中毒症状加重或肿块增大

D.慢性输卵管炎

E.输卵管卵巢脓肿

两侧耻骨联合面借耻骨间盘的连结构成（），耻骨间盘属于（）软骨。

企业各种产品提供的贡献毛益即是企业的营业毛利。

During the risk analysis process, it is determined that one identified risk event cannot be avoided, mitigated, or insured. This risk event is a critical item that could cause the project to fail if it occurs. The best option for the project manager is to: (73) .

A．Continue to search for an insurance company that would assume the risk

B．Place special emphasis on the risk event to intensely manage that item and all interfacing items

C．Play down the risk and the team will find a means of overcoming any failure

D．Ignore the risk assessment because any assigned value is a point estimate which is never precisely the expected state of nature

将二进制数100111100101.1011转换为十六进制数是多少？