这个标志是何含义？（） A．T型交叉路口 B．Y型交叉路口 C．十字交叉路口 D．环

皱粒豌豆比圆粒豌豆更甜美的根本原因是[ ]

A．淀粉含量高

B．淀粉含量低

C．外来基因插入影响了淀粉分支酶的合成

D．蔗糖含量较高

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。

Does failure really exist?

If you believe you have failed, then you have.  If you believe you don’t have the ability to succeed, then you don’t.     小题1:  The moment you decide to give up or stop working toward your goals, failure is born.

  小题2:  

Most people give themselves an out without even realizing it. They are willing to work hard on reaching their goals, but only until the going gets too rough or their energy dies down.  Don’t do that!  小题3:  Never quit, never admit failure, and never lose heart.

Don’t believe in a clear finish line for goals.

It’s a good idea to set a general timeline (时间表), but remember that something will be beyond your control.   小题4:  If you lock yourself into a given timeline, you might make yourself feel like a failure!  Instead, get a general idea of when you’d like your goal to be completed. Then take it one day at a time and focus on making progress instead of reaching the finish line in as little time as possible.

Be sure that you don’t see difficulties as failures.

Difficulties mean only one thing:  it’s not time for your goal to be completed yet.  That’s it!  It doesn’t mean you failed; it doesn’t mean you’re weak; it doesn’t mean you’ll never achieve your goals.   小题5:  You’ve got to keep moving forward and find a way over, around, or through the difficulties.

A．Never give up on yourself.

B．Failure only exists in your own mind!

C．That’s exactly how failure makes us feel.

D．It simply means you have not done enough yet.E. You can never say exactly when your goal will be reached.

F. Make up your mind to make your goal happen, no matter what!

G. Work hard towards your goal, and you will be likely to get good results.

某企业2010年2月生产的丁产品需经过两道工序制造完成，采用约当产量比例法分配生产费用。该产品各工序的工时定额和月末在产品数量如下：

工序	各工序工时定额	月末在产品数量
1	90	500
2	60	300
合计	150	800

该企业本月份完工产品600件，假定各工序在产品完工程度为50%。月初在产品和本月发生的职工薪酬总额为7128元。
要求：根据以上资料，计算以下指标：

各工序在产品约当产量。

下列说法中正确的是（　　）

A．静止在地面上的冰块没有内能

B．空中飞行的飞机比地面上静止的火车的内能多

C．动能大的物体内能一定大

D．自然界中任何状态下处于任何位置的物体都有内能

什么是矩形比？对矩形磁滞回线材料的基本要求是什么？