已知复数z1满足z1•i=1+i（i为虚数单位），复数z2的虚部为2． （1）求

2012年5月，互联网上披露多家制药公司利用回收的废旧皮鞋制造药物胶囊，因皮革制品中含有铬元素（Cr），对人体有害，该事件在社会上引起了强烈反响．根据图，你认为有关铬元素的说法错误的是（　　）

A．铬原子核中有24个质子

B．铬元素属于金属元素

C．铬元素的相对原子质量为52.00克

D．铬原子核外有24个电子

继发性肺结核病包括__________、__________、__________、__________、__________。

What should you think about when trying to find your career? You are probably better at some school subjects than others. These may show strengths that you can use in your work. A boy who is good at mathematics can use that in an engineering career. A girl who spells well and likes English may be good at office work. So it is important to know the subjects you do well in at school. On the other hand, you may not have any specially strong subjects but your records show a general satisfactory standard. Although not all subjects can be used directly in a job, they may have indirect value. A knowledge of history is not required for most jobs but if history is one of your good subjects you will have learned to remember facts and details. This is an ability that can be useful in many jobs.

Your school may have taught you skills, such as typing or technical drawing, which you can use in your work. You may be good at metalwork or cookery and look for a job where you can improve these skills. If you have had a part-time job on Saturdays or in the summer, think what you gained from it. If nothing else, you may have learned how to get to work on time, to follow instructions and to get on with older workers. You may have learned to give correct change in a shop, for example. Just as important, you may become interested in a particular industry or career you see from the inside in a part-time job.

Facing your weak points is also part of knowing yourself. You may be all thumbs when you handle tools; perhaps you are a poor speller or cannot add up a column of figures. It is better to face any weakness than to pretend they do not exist. Your school record, for instance, may not be too good, yet it is an important part of your background. You should not be apologetic about it but instead recognize that you will have a chance of a fresh start at work.

(   ) 46. We can infer from the first paragraph that ________.

learning better at school shows power in your job

the better you are at school subjects, the more helpful they are in your career.

learning each subject well is an ability in many jobs.

we should think about how to find our career

(   ) 47. From the passage we learn that if a student’s school performance is not good, he

will _____.

A. have no hope in his future work

B. be hopeful to find a suitable job

C. regret not having worked harder at school

D. have an opportunity of a new beginning in his future work

(   )48. All the subjects may have direct value for job hunting except _________.

A. mathematics     B. English       C. history       D. technical drawing

(   )49. The underlined phrase “be all thumbs” (in Paragraph 3) probably means “_________”.

A. heavy- handed    B. the best      C. important    D. skilled

(   )50. The passage mainly discusses ___________.

A. The relationship between school performance and career

B. how to get a job

C. How to show strengths in your work

D. working experience and knowledge at school

通信网络在硬件设备方面的组成是（）。

A.信息处理设备、路由方案、交换设备

B.编号方案、各种协议、终端设备

C.终端设备、传输链路、交换设备

甲、乙、丙均系个体经营者，甲因从乙处进货而拖欠其，20万元货款，乙又因借贷而拖欠丙20万元，现离借款到期日还有4个月，乙在征得甲、丙同意后，决定以汇票结清他们之间的债权债务关系，乙作出票人，甲做付款人，丙做收款人，票据金额20万元，出票日后4个月付款，甲与乙之间汇票结算后的尾数用现金了结。丙拿到汇票后为便于流通便找甲进行了承兑。此后，丙从某家具厂进货时，将汇票背书转让给了家具厂。家具厂接收到汇票时距到期日还有近3个月，遂又决定用该汇票采购木材，采购员刘某携带已在票据背面背书栏签有本单位的汇票外出时不慎将其丢失，刘某将汇票丢失的情况告知了家具厂，家具厂立即向甲办理了挂失止付的手续，其他措施未采取。该丢失的汇票被李某捡到，李某发现票据背面的最后一次背书未填写背书人，便喜出望外地签了名，然后持汇票到某家电商场购置了一套价值20万元的家电，并将汇票背书后交给了家电商场。家电商场未进行票据的转让。现汇票到期，家电商场持汇票请求甲付款，甲以汇票已挂失止付为由拒绝付款，家电商场只好追索，并对所有前手发出了通知。家具厂接到通知后提出自己是票据权利人，家电商场的票据权利有缺陷，请求返还票据。双方发生争执，诉至法院。
现根据《票据法》有关规定回答下列问题：
1.家电商场是否享有票据权利为什么