说明S-I=（GP-NT)+（EX-IM)的内涵。

A. EX1540S最大支持的磁盘数要少于不如IX1540S

B. EX1540S没有复制功能

C. EX1540S没有缓存电池保护功能

D. EX1540不支持RAID50

A、monomer formation can occur

B、polymers can form

C、organic molecules disintegrate

D、RNA replicates

E、all of the above

I __22_ on well with the other girls who lived in my dorm. Often, __23__ finishing my homework before it was __24__ to hand in, I went upstairs and had ice cream with my neighbor. I ___25 ___finished it the next day between classes. But I knew it wasn&39;t very good and the ___26___ I received showed my lack of __27__ . I realized that I needed to find some sort of _28__ . So, the next day I created a __29__ that would __30__ my time up between going to class, doing homework, and relaxing. It seemed like a good idea, __31__ I was only able to __32__ it for a few days. A schedule like that had too much __33__ . So I tried another plan.

This one __34__ lists and common sense. Each week I made a list of __35__ I had to get done during that week and by which day I had to have it done. Then, ___36___ the list of things I had to get done, I made a list of things I could do if I had the time.

This is the __37__ I have used since then. Now, I have started my senior year and I feel time is__38__ . Scheduling my time has become more challenging, but I continue to do it.

My cousins, who are now in college, tell me that there are a lot of books to read by yourself and many different things to do, with various people and organizations. So I&39;m __39__ that I&39;ve learned to balance things and it has helped _40___ me for what is to come after graduation.

21________

A.disaster

B.challenge

C.trouble

D.competition

22A.kept

B.caught

C.took

D.got

23A.as well as

B.in order to

C.instead of

D.not only

24A.point

B.late

C.ready

D.time

25A.seldom

B.always

C.hardly

D.never

26A.degree

B.rank

C.grade

D.title

27A.intelligence

B.confidence

C.exercise

D.effort

28A.balance

B.skill

C.change

D.improvement

29A.form

B.timetable

C.method

D.system

30A.average

B.arrange

C.divide

D.organize

31A.and

B.but

C.so

D.then

32A.accept

B.collect

C.follow

D.insist

33A.pressure

B.influence

C.question

D.doubt

34A.provided

B.included

C.formed

D.needed

35A.anything

B.something

C.nothing

D.everything

36A.under

B.among

C.from

D.with

37A.skill

B.method

C.experience

D.approach

38A.important

B.valuable

C.limited

D.up

39A.glad

B.convinced

C.sure

D.ungrateful

40A.enable

B.prepare

C.practise

D.equip

求I=∫_AMB[ψ(y)e^x-my]dx+[ψ'(y)e^x-m]dy，其中ψ'(y)连续，AMB为连接点A(x₁，y₁)和点B(x₂，y₂)的任一路径．但与线段AB围成面积为定值S，且AMBA为闭路正向．

A、12

B、13

C、16

D、24

简述一般性货币政策工具的种类及实现过程。