下列哪些因素可以影响心脏排血量（） A.静脉压 B.静脉回流量 C.心率

苯塔采用温差控制的优点主要是（）

A.能克服外界大气的影响

B.能降低生产成本

C.能降低塔的操作压力

D.能超前控制，保证产品质量。

李师傅用5小时生产2690个零件，照这样计算，再生产4842个零件，还需要多少小时？（比例解）

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Every person has a great deal of love to give.   小题1:  Here is a general guide to loving.

Say it. When you say the words “I Love You”, make sure you really mean it, and are willing to do anything for that special person.

  小题2:  If you love someone, you should understand how they feel, where they come from, and who they are. Realize how they could also love you back just as well.

Love unconditionally. Giving unconditional love requires you to love without any expectations. 小题3:   It seems difficult to only love and not demand anything in return in today’s world where everyone is selfish. But even in this world we see many examples of unconditional love, for example the love a mother gives to her child and the love between two life partners. To love unconditionally, you will have to learn to sacrifice(牺牲) yourself and your desires and also realize that someone may have a different way of showing his or her love for you.   小题4:  

Realize it can be lost. If you realize that you can lose the one you love, then you have a greater appreciation of what you have.   小题5: Don’t make an idol of the person you love. This will place them under unnecessary pressure and will likely result in you losing them.

Never stop loving. Even if you have been hurt before, you should not stop giving love.

A．Try loving just for the sake of love.

B．Put yourself in someone else’s shoes.

C．There are many different ways to explain love.

D．Think how lucky you are to have someone to love.E. Do not expect to be loved back in exactly the same way.

F. It does not make you a bad person to desire someone else’s love.

G. There are many different ways to love someone (or even yourself).

当前的管理信息系统的形式发生了很大的变化。这些系统除了它传统的功能外，还包括了诸如即时库存管理(JIT)，电子数据交换(EDI)，电子订货系统(EOS)，电子转帐系统 (EFT)，信用卡服务(POS)，商业增值服务网络(VAN)，其主要原因是由于 【9】 技术的迅速发展。

道岔曲股方向不良时，应在（）方向符合要求的基础上，通过控制支距的方法进行调整。