电器设备必须要有什么装置？

某企业投标一工程建设项目，需编制一个投标文件载明相关内容，依我国招标投标法，下列答案正确的是？

A．投标文件对招标文件提出的实质要求和条件做出响应

B．投标文件包括拟派出的项目负责人与主要技术人员简历，业绩和拟用于完成招标项目的机械设备

C．若该企业中标后，拟将非主体工作分包，则分包计划应载明在投标文件中

D．该企业预计的全部施工设计内容

患者，男，65岁，急性下壁心肌梗死，第2天心电监测示二度Ⅰ型房室传导阻滞，心室率50次/分，血压110/70mmHg，治疗应首选（）

A.临时心脏起搏器植入

B.肾上腺素

C.直流电复律

D.毛花苷C（西地兰）

E.阿托品

在气相色谱法中，定性指标有（）

A.保留时间

B.相对保留时间

C.调整保留体积

D.调整保留时间

E.保留体积

Many parents complain that their teenage children are rebelling. They greet their children’s teenage with needless dread. While teenagers may assault us with heavy-metal music, wear strange clothes, have strange hair styles, and spend all their time dating or meeting friends, such behavior scarcely adds up to full-scale revolt.

Take a good look at the present rebellion. It seems that teenagers are all taking the same way of showing that they disagree with their parents. Instead of striking out boldly on their wings, most of them are clutching at one another’s hands for reassurance. Their reason for thinking or acting in thus-and-such a way is that the crowd is doing it. It has become harder and harder for a teenager to stand up against the popularity wave and to go his or her own way. They have come out of their cocoon—into a larger cocoon.

Teenage rebellion, according to psychologist Laurence Steinberg, coauthor of You and Your Adolescent, has been greatly overstated. Many other psychologists agree. The idea that teenagers inevitably rebel is a myth that has the potential for great family harm. This notion can damage communication during this critical time for parents to influence youngsters.

Still adolescence is often a trying time of transition for child and parent. Teenagers need to establish themselves as individuals—in their own minds and in the eyes of others. This search isn’t about rebellion: it’s about becoming a person of one’s own. " Teenagers ought to be growing away from their parents and learning to stand on their own two feet, " says Steinberg.

Here is one way parents can help: don’t stereotype. " Parents who expect teenage rebellion may actually stir it up, " says Kenneth I. Howard, a member of a research team that collected survey data on more than 20,000 teenagers over a 28-year period.

Howard cautions parents not to resort to suppression at the first sight of adolescent independence, fearful that giving in even slightly now means drugs cannot be far behind. When parents overreact, teenagers assert themselves more, parents clamp down harder, and a full-scale blowup results.

In fact, psychologists say that there is no inevitable pattern to teenage behavior, and no such creature as a typical teenager. Your teenager is now larger, per, older and smarter than before, with an additional supply of hormone raging through the bloodstream. But he or she is still the same human being you have lived with since birth. Given a chance, your son or daughter will continue to behave in ways you have established.

According to the psychologists, it is beneficial for parents to（）

A.show fear

B.use suppression

C.clamp down harder

D.treat teenagers as they used to

开销字节不能完成的功能是（）。

A.误码监测

B.指针正调整

C.帧定位

D.通道跟踪