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问题 单项选择题

工程网络计划中工作的自由时差和总时差均表示工作所具有的机动时间，如果计算工期与计划工期相等，则（）。

A．自由时差等于总时差

B．自由时差大于总时差

C．自由时差小于总时差

D．自由时差与总时差没有关系

答案

参考答案：A

阅读理解
     A

I am Alice. I like We chat. It is fast, convenient and fashionable. And you can use it for free. It can be used in my mobile phone. It has hold-to-talk voice messaging function. I am a fan of Leehom Wang. Through We chat, Leehom Wang often says something to me. It’s amazing.

I am David. I love Micro blog. I update my Micro blog when I am free. We can share instant(即时的) messages with each other. I often look through Yao Chen’s Micro blog. She has many followers. I make many friends with them. I often write something on my Micro blog, for example, “I’m in blue today. I didn’t pass the exam.” Then many friends comfort me. I share my birthday party, my new phone, my new coat, etc. with my friends. It is fun.

I’m Lily. I don’t like We chat or Micro blog. I don’t believe them. There are so many crimes(愚蠢行为) on We chat. Many people are cheated(欺骗) because they believe in other people they meet on We chat easily. It is not a real world. As to Micro blog, I don’t think it is a good way to make friends. And you should write something no more than 140 words. I like keeping diaries. I don’t want my secrets known by others. I am a low-key(低调的) girl.
小题1:Who loves Micro blog?
A．Alice.B．David.
C．Lily. D．Leehom Wang.
小题2:What does Alice think about We chat?
A．It’s fast and convenient. B．It’s fashionable but slow.
C．It’s safe and useful.D．It’s fun but expensive.
小题3:Why doesn’t Lily believe We chat?
A．Because many people are cheated on We chat easily.
B．Because she doesn’t like to say anything to her friends.
C．Because she doesn’t think it is a good way to make friends.
D．Because she prefers keeping diaries to showing secrets to others.
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单项选择题

抵押与质押的区别主要在于( )。

A．担保财产是否为第三人的财产

B．担保财产变卖后的剩余部分是否归债务人

C．担保财产是否转移占有

D．债权人是否有优先受偿权
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