关于有髓神经纤维跳跃传导的叙述，不正确的是（）。 A.以相邻郎飞节间形成局部电流传导

简述公共关系辅助决策职责的内容及意义？

食用黄花菜应选用（）。

A．色金黄、开花、有光泽、较干者

B．色金黄、末开花、有光泽、较干者

C．色金黄、开花、有光泽、干透者

D．色金黄、未开花、有光泽、干透者

肝病患者下列哪项对诊断肝硬化最具参考价值

A．脾肿大

B．蜘蛛痣与肝掌

C．肝肿大且质地坚硬

D．蛋白电泳γ球蛋白明显增高

E．食管吞钡X线检查显示虫蚀样充盈缺损

On Saturday nights, A.J.Coston doesn’t get a lot of sleep. Usually three or four times a night, a loud bell rings, a red light flashes, and he has to jump out of his bed. That’s because he’s a weekend volunteer firefighter（消防员）with Loudoun County Fire and Rescue Station 13 in Northern Virginia. During the week, he lives at home with his mom, dad and sister and does his main job which is going to high school.

“I have always wanted to get into firefighting since I was a little kid watching fire trucks go by,” he says. “One day on the Internet I noticed that Loudoun County offered a junior firefighter program.” He was only 16, but he got it.

Fighting fires is dangerous work. Firefighters never stop practicing the skills they need to stay safe. Once Coston learned those skills, he was allowed to work inside burning buildings.

“Teamwork is most important,” he says. “It’s the whole team that puts the fire out.”

Firefighters feel great about helping people. “My most unbelievable call was probably the time four kids were struck by lightning,” says Coston. He will be off to college next fall, building on his dream job. “I’ll get my degree in emergency（紧急情况） medical care. and then work in a fire and rescue company for a while. I want to be a flight doctor on a helicopter in the end, but I will never forget the days as a firefighter. These are my unforgettable experiences,” he says.

小题1: Coston can’t sleep well on Saturday nights because _____.

A．he has to work part-time at weekends

B．he has some sleeping problems

C．he has to do his job as a volunteer firefighter

D．he always worries that there may be a fire小题2:What do we learn about Coston from the passage?

A．He doesn’t like studying at school.

B．He will go to college next year.

C．He dreams to be a great hero one day.

D．He is only sixteen years old.小题3:In Coston’s opinion, what is the key thing in putting out a fire?

A．Skills.

B．Teamwork.

C．Courage.

D．Equipment.小题4:All of the following are true EXPECT that _____.

A．Coston wanted to be a firefighter when he was a kid

B．Coston tried several times before he became a volunteer firefighter

C．firefighters feel proud that they can help people

D．firefighters have to practice skills all the time to stay safe

生产网与外部网严格隔离、网络病毒防范与杀毒工作、密码管理工作、信息安全管理、生产网数据备份工作、网络故障应急预案制定、（）等都属于网络安全管理的工作范畴。

A、运行维护人员资质审核

B、网络设备故障处理

C、网络远程登陆管理

D、整治存在隐患的设备