烧结矿FeO含量对烧结矿质量的影响主要表现在（）方面。A、烧结矿强度B、烧结矿冶金性

材料价格差异产生的原因主要有()。

A、供应厂家价格变动

B、废品、次品率的变动

C、材料质量的变化

D、运输方式和运输路线的变化

下列不属于动物行为的是（　　）

A．蜜蜂采蜜

B．公鸡打鸣

C．心脏跳动

D．竹节虫的拟态

Lim provides printing services under the business name of AC Printing Services (AC). Lim had rented a unit from JTC Corporation (JTC) a year ago. The tenancy agreement included clause 21, which required the landlord ‘in every way to keep the building in good repair’.On 23 March 2011, large chunks of concrete broke off from the ceiling in the unit occupied by AC. Although no-one from AC was hurt in the incident, the chunks of concrete landed on two of AC’s printing machines and severely damaged the machines. Also, as the entire building had to be shut down for inspection by structural engineers, AC had to close for two weeks, resulting in numerous cancellations of their existing services as well as a loss of new deals. To make matters worse, AC was very close to signing a lucrative contract worth $30,000 with a well-known advertising agency which it then lost to a rival firm. Lim is extremely upset and wants to sue JTC.Required:Assuming JTC has breached the tenancy agreement, advise Lim as to:

(a) whether he can terminate the tenancy agreement, having regard to the nature of the term set out in clause 21 of the tenancy agreement; and (6 marks)

小儿机体发育所遵循的规律，正确的是（）

A.是一个连续平均的过程

B.年龄越大发育越快

C.婴儿期发育最快

D.各系统发育快慢一致

E.体格上的个体差异随年龄增长而逐渐减小

经有一段时间各大旅游景点统一采取价格上调策略，周庄也跟着凑热闹将价格调高了，结果伤害了旅游公司的利益，几乎所有的原来计划组团去周庄的旅游公司都改道去了其他的地方。因为周庄不像黄山或者秦始皇兵马俑，不具有不可代替性，价格对需求的影响非常大。再看2006年北京出租车价格统一上调（从每公里1.2元、每公里1.6元统一上调到每公里2，00元），上调之初确实导致了乘坐率下降，但是3个多月后开始逐步回复到正常状态。主要原因在于，虽然北京有近百家出租车企业，但是价格却由国家统一掌管，同行业之间建立起了一个联盟，避免了同行业间恶劣的价格争夺战。请回答：

请分析客户忠诚的类型有哪些？并简要说明。