第三代集散控制系统的典型结构是：（）＋与MAP兼容的局域网＋信息综合管理系统。 A.

单项选择。

I            like apples![ ]

A. do       

B. don't    

C. am not

Katie always felt there had to be something more to life than just partying, buying clothes and driving a cool car. She finally discovered what she was missing out on when she traveled halfway around the world to help poor kids.

When she was 14, she discovered a club at school called Operation Smile, an organization that supports free operation for facially deformed kids in developing countries. At that time, she joined Operation Smile just to satisfy her school's community service requirement.

After working with Operation Smile for a while, she learned different countries have different deformities (畸形). The more she learned about what affects kids around the world, the more she wanted to go abroad with Operation Smile.

At 15, she was chosen to go abroad. She was so happy – even though she didn't realize what she was getting herself into. Before her trip, she attended a weekend "mission training". That's when she was told she'd be going to the Philippines. Although she was excited, one night during training, she broke down in tears. She didn't know if she was prepared to see all these unfortunate kids. She was put to work three days after her arrival in the Philippines. Her first day was at the hospital, where she met those kids waiting for operation, and they were running around and happy, it seemed normal. Her job was to play with the kids before their operation to help them feel more at ease. She also went to nearby schools to hand out toothbrushes and teach students how to brush their teeth.

When their operation was over, the kids were always overjoyed, but their parents were blown away. Sometimes they couldn't even recognize their kids because their appearances had improved so much. They'd cry and hug the doctors and nurses and give them presents--they were so grateful.

小题1:Why did the author join the Operation Smile?

A．To help poor kids in developing countries,

B．To satisfy her own curiosity.

C．To do what was required by the school.

D．To operate on those unfortunate kids.小题2:According to the passage, Operation Smile ____.

A．is a club popular with students

B．is an organization founded by students

C．helps those unfortunate kids learn how to smile

D．offers operation for those unfortunate kids free of charge小题3:Why did the author play with those kids in hospital?

A．To make them happy.

B．To learn more shout them.

C．To teach them how to brush their teeth.

D．To make them feel relaxed about the operation.小题4:After the operation, parents felt surprised for their kids' had improved so much.

A．health condition

B．looks

C．smile

D．mood

甲、乙两人签订加工承揽合同，乙请丙为其200万元的债务提供保证，其后甲又要求乙用其两辆价值120万元的轿车作为抵押，后来乙无力偿还债务，甲向丙提出偿还200万元债务的请求，如下说法正确的是（）

A．丙应偿还200万元的债务

B．如果甲放弃车辆抵押权，可以请求丙代偿全部债务

C．如果甲放弃车辆抵押权，就不能向丙行使偿还200万元债务的请求权

D．如果甲放弃车辆抵押权，丙仅对车辆抵押以外的债务承担保证责任

根据统计显示，80%的网络攻击源于内部网络，因此，必须加强对内部网络的安全控制和防范。下面的措施中，无助于提高同一局域网内安全性的措施是______。

A．使用防病毒软件

B．使用日志审计系统

C．使用入侵检测系统

D．使用防火墙防止内部攻击

根据《带电作业用绝缘滑车》（GB/T13034-2008）第3.4.5.2条，下列关于绝缘滑车滑轮制作工艺描述正确的是（）。

A.采用聚酞胺1010树脂等绝缘材料制造

B.滑轮孔表面粗糙度不低于Ra6μm，公差为N7

C.加工完毕后，端面涂刷不少于1次

D.孔的径向全跳动公差不低于10级