客流调查有哪几种？具体有哪些方法？

有位初中学生常常为自己相貌平平而自哀自怨。一天，心理咨询老师与她做了一番长谈，建议班主任请她在新年联欢会上做主持人，并为她设计了服装搭配和发型。联欢会上，这位学生热情地与同学和来宾打招呼，举止得体，落落大方，成为联欢会上最受欢迎的一位主持人。这说明，对人的美丑起决定作用的是[     ]

A．穿什么服装

B．设计什么发型

C．有没有心理咨询老师的指导

D．是否悦纳自己并发挥自己的潜能

Fred Funk, CFA, agreed in writing with his former employer not to solicit former clients for a period of one year after his termination. After he left his former employer, he consulted with a lawyer about whether the agreement was legally enforceable. The lawyer advised Fred that it was doubtful that the agreement could be enforced, so Fred sent a marketing brochure about his new firm to his former clients. According to the Standards of Practice Handbook, which of the following Statements is most accurate with respect to Fred’s conduct（）

A. The standards do not apply to Fred’s conduct.

B. The Standards requires Fred to comply with the agreement with his former employer.

C. Because Fred relied upon the opinion of legal counsel, he did not violate the Standards.

下列可在人体首次感染细菌外毒素后的免疫“效应”阶段发生的是[ ]

A．T细胞将抗原呈递给B细胞

B．抗体与外毒素特异性结合

C．造血干细胞发育成T细胞

D．记忆细胞增殖分化成效应B细胞

女性，60岁，间断双手远端指间关节疼痛3年，晨僵30分钟，查体可见双手指的Heberden结节（远端指间关节肿大结节），最可能的诊断（）

A.类风湿关节炎

B.痛风

C.骨关节炎

D.银屑病关节炎

E.系统性红斑狼疮

构筑物流系统的主要成本因素是（　）。

A．人员工资

B．物流技术及其装备费用

C．装卸成本

D．仓储成本