Most members of the committee were in fa

旅游审美主体的影响因素有哪些？试论述他们都是如何影响旅游者的审美活动的。

取一只烧杯，称得其质量为70.4g，加入一定量生铁样品碎屑，称得烧杯和样品的总质量为102.4g；向盛有生铁样品的烧杯中加入稀硫酸，边加边搅拌，直到烧杯中不再产生气泡，再加入少量稀硫酸以确保过量，测得共用去稀硫酸247.3g；静置，称量，称得烧杯和剩余物质的总质量为348.7g。

（1）实验过程中稀硫酸要过量的原因是                                。

（2）计算该生铁样品中单质铁的质量分数。（请写出计算过程）

A $1000 face, 10-year, 8.00 percent semi-annual coupon, option-free bond is issued at par (market rates are thus 8.00 percent). Given that the bond price decreased 10.03 percent when market rates increased 150 basis points (bp), which of the following statements is TRUE If market yields:（）

A. decrease by 150bp, the bond’s price will decrease by more than 10.03%. 

B. decrease by 150bp, the bond’s price will increase by 10.03%. 

C. decrease by 150bp, the bond’s price will increase by more than 10.03%.

原料煤中外水含量越低，越有利于制备高浓度的水煤浆。

引起高氯性酸中毒的是（）。

A.剧烈呕吐

B.剧烈腹泻

C.过度换气

D.急性肾衰

E.大量输入等渗盐水