需要办理注销税务登记的情形有( )。A．企业破产 B．企业解散 C．企业迁移 D．企

为了正确传输高层数据而增加的控制信息是IP数据报中的( ) 部分。

A．版本与协议类型

B．服务类型

C．分片和重组控制

D．报头区

女性，47岁，左肩胛部有一蚕豆大皮疹，表面溃烂，切片显示表皮角化亢进，瘤巨细胞和胞质红染、核大而深染的异型细胞，呈灶状和散在分布，无浸润。正确的诊断是（）

A.基底细胞 * * 状瘤

B.鳞癌

C.角化棘皮瘤

D.鲍温病

E.以上均不是

小企业为了克服人力资源的限制，可以利用的外部人力资源。包括（）。

A.与有关科研部门或大专院校建立技术协作关系

B.聘用兼职专业技术或管理人员

C.聘请国内外专家、学者为企业生产经营提供指导

D.聘请离退休人员

痴呆综合征的主要表现是

A．有意识障碍

B．是全面的智能减退

C．多有自杀

D．注意力集中

E．多有妄想

Exercise, everyone advises! But immediately, when you try, you run into trouble. (46)There is so much contradictory, sometimes incorrect advice about exercising that you become confused. Test yourself on the following true false quiz. It will tell you what you need to know.
1. The best way to reduce the mid-section is to do abdominal exercise.
False. Many people believe that when specific muscles are exercised, the fatty tissues in the immediate area are "burned up." (47)The truth-is that exercise burns fat from all over the body and not from one specific area, regardless of the type of exercise. Of course, if you reduce the fat throughout your body, you will certainly see results around your waistline too!
2. To maintain an adequate level of physical fitness, you need to exercise only twice a week.
False. Studies conducted by NASA, the National Aeronautics and Space Administration, show that unexercised muscles lose their strength very quickly. After 48 to 72 hours, you must use the muscles again to reestablish the good physical effect. And what does that mean to you (48) NASA scientists concluded that while daily exercise is most beneficial, three alternating days each week will maintain an adequate level of physical fitness.
3. To lose weight you should always "work up a good sweat" when exercising.
False. Sweating only lowers body temperature to prevent overheating; it does not help you reduce weight. You may weigh less immediately after a workout, but this is due to water loss. Once you replace the liquid, you replace the weight.
4. If your breathing doesn’t return to normal within minutes after you finish exercising, you’ve exercised too much.
True. Five minutes or so after exercising, your breathing should be normal, your heart shouldn’t be pounding, and you shouldn’t be exhausted. (49) Beneficial exercise is not overly difficult, unpleasant, and exhausting; it is moderate, enjoyable, and refreshing.
5. Walking is one of the best exercises.
True. Walking helps circulation of blood throughout the body, and thus has a direct effect or your overall feeling of health.
6. The minimum amount of time you should spend exercising in a day is 20 minutes.
True. There are more than 400 muscles that attach to your skeleton. (50) A good exercise routine should contract and stretch all these muscles, and this simply cannot be done with four or five exercises in five to ten minutes. From experience, I’ve found that about 20 minutes is the minimum amount of time needed for an adequate workout.