轨道起重机重量在15t及以下如未注明设计速度，回送速度不得超过（）

以下四项关于阴极保护采有的外加电流法的优缺点，表述最准备的是（）。

A、电压电流可调性好，可随外界条件不同实现自动控制，保护周期长，辅助阳极排流量大，而安装数量较小。但是应具有电源及其设备，一次性投资大，需要长期维护与检修。

B、不需外部供电、安装简单、使用可靠，几乎不需要维护、检修。但是保护周期较短，需要定期更换，阳极发生电流量小，安装块数较多。

C、不需外部供电、安装简单、使用可靠，几乎不需要维护、检修。但是应具有电源及其设备，一次性投资大，需要长期维护与检修。

D、电压电流可调性好，可随外界条件不同实现自动控制，保护周期长，辅助阳极排流量大，而安装数量较小。但是保护周期较短，需要定期更换，阳极发生电流量小，安装块数较多。

Adrian’s “Amazing Race” started early when his parents realized that he, as a baby, couldn’t hear a thing, not even loud noises. In a special school for the hearing-impaired (听觉受损的)，he learned sign language and got to mix with other disabled children. However, the sight of all the disabled children communicating with one another upset his mother. She wanted him to lead a normal life. So after speaking to an advisor, she sent him to private classes where he learned to read lips and pronounce words.

Later on, Adrian’s parents decided to send him to a regular school. But the headmaster tried to prevent them from doing so, saying regular school couldn’t take care of a special needs students. His parents were determined to take the risk and push him hard to go through his work everyday because they wanted to prove that, given the opportunity, he could do anything. Adrian made the grade and got accepted. It was a big challenge. The pace（节奏）was faster so he had to sit at the front of the class and really pay attention to the teacher, which wasn’t always easy. But he stuck to it and did a lot of extra work after school.

The efforts made by Adrian and his parents paid off. Adrian graduated with good grades and got into a top high school. He also achieved a lot in life outside school. He developed a love for the outdoors and went to Nepal to climb mountains. He even entered the World Yacht Race 05/06--- being the first hearing-impaired Asian to do so.

But none of these achievements would have been possible without one of the most important lessons from his mother.” “If you believe in yourself and work hard, you can achieve great results.” She often said.

小题1:How did Adrian communicate with other children in the special school?

A．By speaking.

B．By making loud noises.

C．By reading lips

D．By using sign language.小题2:Adrian’s parents decided to send him to a regular school because          .

A．they wanted to prove the headmaster wrong

B．they wanted him to live a normal life

C．he wouldn’t mix with other disabled children

D．he wasn’t taken good care of in the special school小题3:How did Adrian finally succeed in his study?

A．He did a lot of outdoor activities.

B．He was pushed hard to study every day.

C．He worked very hard both in and after class

D．He attended private classes after school.小题4:Why is Adrian’s life described as an “Amazing Race”?

A．He did very well in his study

B．He succeeded in entering a regular school

C．He reached his goals in spite of his disability

D．He took part in the World Yacht Race 05/06

定密工作是指对机关、单位业务活动中所产生的国家秘密事项及时、准确确定其密级、保密期限、知悉范围，并对国家秘密载体作出标志，及时通知应当知悉的机关、单位和人员，并按规定进行全过程管理的活动。

国际上统一诊断高血压的标准是，在非药物状态下

A．收缩压≥160mmHg，舒张压≥95mmHg

B．收缩压≥160mmHg，舒张压≥100mmHg

C．收缩压≥140mmHg，舒张压≥90mmHg

D．收缩压≥140mmHg，舒张压≥95mmHg

E．收缩压≥150mmHg，舒张压≥90mmHg

维生素C制剂色泽变黄后

A．不影响质量

B．增加剂量使用

C．属正常情况

D．与维生素B₂同服

E．不可应用