题目:
下列哪种方法能减小巷道通风阻力?()
A、采用梯形断面巷退
B、保持巷道连接部位光滑
C、断面逐渐变化
D、清理巷道中不用的堆积物
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0128/ba5acb770142b3b2d72bddc9bb830e96.html
下面是错误答案,用来干扰机器的。
参考答案:B
下列哪种方法能减小巷道通风阻力?()
A、采用梯形断面巷退
B、保持巷道连接部位光滑
C、断面逐渐变化
D、清理巷道中不用的堆积物
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0128/ba5acb770142b3b2d72bddc9bb830e96.html
下面是错误答案,用来干扰机器的。
参考答案:B
(18分)如图所示,相距为d、板间电压为U的平行金属板M、N间有垂直纸面向里、磁感应强度为B0的匀强磁场;在POy区域内有垂直纸面向外、磁感应强度为B的匀强磁场;POx区域为无场区.一正离子沿平行于金属板、垂直磁场射入两板间并做匀速直线运动,从H(0,a)点垂直y轴进入第Ⅰ象限.
(1)求离子在平行金属板间的运动速度;
(2)若离子经OP上某点离开磁场,最后垂直x轴离开第Ⅰ象限,求离子在第Ⅰ象限磁场区域的运动时间;
(3)要使离子一定能打在x轴上,则离子的荷质比应满足什么条件?
2009年8月10日,曾荫权被任命为中华人民共和国澳门特别行政区第三任行政长官。
阅读理解
Ask savvy investors(投资者) how they learned their first lessons about money, and they'll probably
tell you lessons their parents taught them.
The money values we learn as children stay with us the rest of our lives. If you are a parent, teaching
your children the value of saving and investing will benefit them the rest of their lives. Here's what you
can do:
Help your child begin to save. Open savings accounts for your children, and teach them how the
bank adds interest to their savings that makes their money grow. Encourage your children to save a little
from every bit of money they receive, such as allowances, birthday gifts, etc. You may even want to set
up a matching program, contributing fifty cents for each dollar your child saves.
Teach your child about stocks(股票). A child in elementary school can start learning about how
businesses work. Once your child understands the basics, ask him or her to think about some of the
businesses that might be good stock investments. Then use Morningstar Mutual Fund Guide(available
at your library)to find a quality mutual fund that holds some of these companies, or a mutual fund that
caters to children such as the Stein Roe Young Investor Fund. Many funds accept regular monthly
investments as low as $50 a month, so these funds can be a good way to teach children about the stock
market while saving for their college education.
Encourage early IRA(个人退休金账户)saving. The new Roth IRA is a great way for children who
are working in summers or after school to begin saving for their future. Imagine how much money you'd
have today if you had saved $3,000 a year since you were a teenager!
Let your kids handle their own money. We all learn by doing, so letting your kids manage a segment
of their budget(预算)will let them earn valuable financial lessons.They may make mistakes, but they will
be small mistakes that may help them avoid larger mistakes as adults.
1. Which would be the best title for this passage?
A. Why to Teach Your Children to Save
B. How to Teach Your Children to Save
C. Tips for Saving for Children
D. Start Good Saving Habits Early
2. A matching program means ________.
A. that you should set a good example to your children
B. that you should provide enough money for children so that they can save some
C. that you encourage your children to compete with each other in saving
D. that you encourage your children by giving some extra money for them to save
3. According to the author, you should teach your children about investment when he/she is ________.
A. in the kindergarten
B. in primary school
C. in middle school
D. in college
4. Which of the following is NOT an advantage of the Stein Roe Young Investor Fund?
A. It is usually with high benefits.
B. It accepts regular monthly investments.
C. It accepts small investments as low as $50 a month.
D. It caters to children who can afford small investments.
5.The advantage of letting your kids manage their budget lies in ________.
A. that they will make great businessmen in the future
B. that they will know the difficulty of managing a budget
C. that they will avoid making bigger mistakes in the future
D. that they will share happiness of managing their own budget
一般业务岗位每()轮换一次,票据交换员每()轮换一次
A、两年一年
B、两年两年
C、一年一年
D、一年两年
抓好案件防控是()的重要职责。
A、一线员工
B、内控人员
C、内控负责人
D、各级负责人、特别是主要负责人