轮机部坞修，下列关于螺旋桨检查与修理的说法中，错误的是（）。A．桨叶表面抛光 B．测

健康教育评价中对项目计划进行的评价称为 （）

A.形成评价

B.总结评价

C.过程评价

D.效应评价

E.结局评价

Getting your teen to think beyond his own immediate needs can be more difficult than cracking a nut with a plastic fork．But don't worry．It's not impossible．There are many ways to encourage your teen to care about those outside his immediate circle of friends．As he begins to have responsibility towards others, he will realize he feels even better about himself．

"Teens are thinking about career, college, and what their future might look like," explains Michelle Maidenberg, a clinical director of Westchester Group Works, a center for group treatment in New York．"This is very challenging and just one of the reasons why they are so focused on their own world．" Once teens participate in community service, however, they begin to look beyond their personal needs．They also learn firsthand about the challenges others face, and they experience a sense of authority as they realize they can make a real difference in others' lives．

Not sure how to convince a teen to get away from the cell phone and into a community project? Teens buy into community service when the project or program is in an area of their interest．

"Finding something in an area of interest for them keeps them motivated and inspired," Maidenberg says．For instance, if he is interested in culinary （烹饪） school, he could volunteer in a soup kitchen or bake for a project that supports families in need．Volunteer projects in your teen's area of interest will build her knowledge base as well as help others．

Parents can do their part by participating in community service themselves．Teens can learn directly from their parents that personal enjoyment is not ,all that matters．

Let teens know the benefits they will obtain．“Give them every reason in the world to volunteer," Maidenberg advises．She says that working on community service projects builds confidence．"By working with others, teens improve managerial, interpersonal and communication skills．Community service helps to approach maturity when they take a step back to see the needs of other people," she adds．Another reward: service hours look great on a resume!

小题1:.

According to Michelle Maidenberg, it's hard to get teens to think beyond their own immediate needs partly because ___    ___．

A．they care more about their circle of friends

B．they have no interest in doing anything

C．they have to work hard for college

D．they are facing many challenges小题2:.

The underlined phrase "buy into" in Paragraph 3 probably means ______．

A．agree to join in

B．spend money on

C．get away from

D．are interested in小题3:.

The writer mentions the benefits in the last paragraph in order to ______．

A．make teens feel much better about themselves

B．encourage teens to care about his own needs

C．help parents reason teens into volunteering

D．get parents to do more community service

亚里士多德崇尚以中产阶级为主体的（）政体，因为他认为中产阶级具有中庸的美德。

A．君主

B．贵族

C．共和

D．平民

请简述血清肌酐的参考值以及临床意义

蒸发器换热温差越大，制冷系统制冷量（）。