在国内工程总承包中，()等方面风险同时存在。A.经济、技术、公共关系 B.商务、经济

简述社会保障的基本理论的主要内容？

女，48岁。主诉右颊部肿块，检查：右腮腺区可及一活动性肿块，2cm×2cm，质中，界清，无明显压痛。如果要检查腮腺导管口的情况，如何寻找其位置（）

A.上颌第一磨牙牙冠相对的颊黏膜

B.上颌第二磨牙牙冠相对的颊黏膜

C.上颌第三磨牙牙冠相对的颊黏膜

D.上颌第一前磨牙牙冠相对的颊黏膜

E.上颌第二前磨牙牙冠相对的颊黏膜

B

New evidence shows that getting enough Vitamin D may be the most important thing you can do for your health．

You know the usual prescription for good health: a balanced diet with lots of fruits and vegetables, regular exercise, no smoking．Now add this: Spend a little more time in the sun．

Huh? That may sound like medical heresy （反面观点）．After all, we've been warned for decades about the dangers of the sun: wrinkles, age spots and the increasing threat of skin cancer．But new and impressive medical evidence suggests that sunlight is beneficial．The vitamin D it prompts our bodies to make may prevent cancer, protect against heart disease and ward off a long list of disorders such as multiple sclerosis, rheumatoid arthritis, diabetes and gum disease．It is even showing promise as a treatment for heart disease and some cancers．

Long recognized as vitally important for bone building （it's needed for calcium absorption）, vitamin D has now achieved superstar status among nutrients．While all doctors may not agree, many experts are confident enough of its wide-ranging powers to urge that we get much more of it, from the sun and from supplements, as even the best diet in the world may not give us enough．

60．Which of the following is NOT the usual way of keeping healthy?

A．To do exercise now and then．

B．To eat plenty of fruits and vegetables．

C．To avoid staying in the sun for a long time．

D．To keep away from cigarettes．

61．What does the underlined word “prompts” in the third paragraph mean?

A．causes              B．forces          C．motivates   D．encourages

62．According to the passage, vitamin D ________．

A．can be got by doing regular exercise

B．can be used to prevent some cancers

C．can be got from the sunlight

D．can be used to remove the wrinkles

63．The passage is most likely from a（an） ________．

A．advertisement      B．news report   C．magazine     D．medical prescription

K-CHIEF 500网络型监视与报警系统的特点是（）。

A.系统由多台计算机组成，它们之间采用并行通信

B.系统由多台计算机组成，它们之间采用串行通信

C.系统由多台计算机组成，它们之间采用网络通信

D.系统由一台上位机和多台下位机组成

机组紧急停运后的处理有哪些？