小华将一张滤纸在某指示剂中浸泡后晾干,用蘸有氢氧化钠溶液的玻璃棒在上面写 “化学

题型:选择题

问题:

小华将一张滤纸在某指示剂中浸泡后晾干,用蘸有氢氧化钠溶液的玻璃棒在上面写 “化学”两字,立刻显红色。再将其悬挂于铁架台上,并在滤纸的下方(如图)放置一盛有某溶液的烧杯,过一会儿,发现红色的字消失,则滤纸上的指示剂和烧杯中的溶液分别是

[ ]

A.酚酞试液;浓氨水

B.酚酞试液;浓盐酸

C.石蕊试液;浓氨水

D.石蕊试液;浓盐酸

考点:酸碱指示剂
题型:选择题

目前常选用下列哪种细胞作HLAⅠ类抗体的筛选与鉴定细胞()

A.T细胞

B.B细胞

C.NK细胞

D.K细胞

E.巨噬细胞

题型:选择题

论述供应链管理的形成与发展经历了哪几个阶段?

题型:选择题
While it is impossible to live completely free of stress,___51___. The US Department of Health and Human Services offers the following suggestions for ways to deal with stress.
Try physical activity
When you are nervous, angry or upset, try releasing the pressure through exercise or physical activity. Running, walking, playing tennis, or working in your garden are just some of the activities you might try. Physical exercise will relieve your anxiety and worry and help you to relax._____ 52_____
Share your stress
It helps to talk to someone about your anxieties and worries. Perhaps a friend, family member, teacher or even your leader can help you a better view of what's troubling you. ____53______Knowing when to ask for help is an important step in avoiding serious problems later.
Take care of yourself
You should make every effort to eat well and get enough rest. If you easily get angry and cannot sleep well enough, or if you're not eating properly, it will be more likely that you will fall into stressful situations. If stress repeatedly keeps you from sleeping, you should consult a doctor. Make time for yourself.
Make a list of the things you need to do
Stress can result from disorganization and a feeling that there's so much to do, and not enough time.______54_______ and as a result, you may not achieve anything. Instead, make a list of everything you have to do, then do one thing at a time, checking off each task as it is completed. Set out to do the most important tasks first.
Go ahead and cry
A good cry can be a healthy way to bring relief to your anxiety.______55_______
A. It might even help you avoid a headache or other physical effect of anxiety and stress.
B. Trying to take care of everything at once can be too much for you
C. Your body and your mind will work together to ease the stress in your life.
D. your mind can work better to free you of anxiety
E. it is possible to prevent stress as well as reduce its effect when it can't be avoided
F. If you feel your problem is serious, you might seek professional help from a psychologist or a doctor.
G. physical activity doesn't play an important part in reducing nervousness
题型:选择题

国外证券市场一般以()作为回购交易的报价方式。

A.年收益率 

B.到期收益率 

C.持有期收益率 

D.到期回购价

题型:选择题

三流和一

更多题库