某医院临床实验室为了配合甲型H1N1流感诊治的需要，拟开展甲型H1N1流感病毒核酸检测,甲型H1N1病毒分离鉴定,血,尿,粪常规检测,生化常规检测,血气分析,T细胞亚群分析等工作，医院为实验室配备了一台A2型生物安全柜，为工作人员准备了一定数量的防护用品，疑似甲型H1N1流感患者的样本由专人进行运送。

进行甲型H1N1病毒核酸检测人员的最佳个体防护应为

A:穿工作服,戴外科口罩 B:穿工作服，戴N95口罩 C:穿工作服,隔离衣或连体衣，戴帽子,外科口罩 D:穿工作服,隔离衣或连体衣，戴帽子,外科口罩,单层一次性手套，穿不露脚趾的实验鞋 E:穿工作服,隔离衣或连体衣，戴帽子,N95口罩,双层手套，鞋套或专用实验鞋，护目镜或面罩 F:工作服即可

男，25岁，沈阳人，肥胖，BMI为36，2009年12月4日起发热，起病前5天曾去海南旅游，当地甲型H1N1流感流行，体温39℃，伴全身肌肉酸痛,乏力；3天后出现咳嗽,咳脓痰，伴右侧胸痛，出现进行性的呼吸困难。

咽拭子甲型H1N1流感病毒核酸检测阳性，下列措施哪一项不恰当

A:需要隔离，就近住院治疗 B:对接触者进行抗病毒治疗 C:易感者可注射甲型H1N1流感病毒疫苗预防 D:咳出脓痰，可应用抗生素 E:调查与该患者有密切接触的人员，对出现上呼吸道症状者进行医学观察

Across the Deserts

　　The SaharaDesertis the largest desert in the world. It stretches across Africa fromSenegaltoEgypt. TheSaharaDesertis an unfriendly environment. During the day it"s very hot, and at night it’s sometimes very cold. It is also difficult to find water in theSahara.

　　In 2006, Kevin Lin, Ray Zahab, and Charlie Engle decided to do something very difficult. They made the decision to run across the Sahara Desert 4,300 miles (6,920km). It seemed impossible to do, but they wanted to try. The three men liked to test themselves, and this would be a very big test.

　　On the morning of November 2, Kevin, Ray, and Charlie started their trip across theSahara. Every morning they began running at 5:00. At11 a.m. they stopped and rested until 5 p.m. Then they ran again until 9:30 in the evening. Each day they ran about 40 miles (64 km). Every day it was the same thing. They got up and ran. They listened to music on their iPods, and they ran and ran.

　　Kevin, Ray, and Charlie needed to eat a lot of food during their trip. Most people need about 2,000 calories of food each day. Kevin, Ray, and Charlie needed between 6,000 and 9,000 calories every day. That"s a lot of food! They also needed to drink a lot of water.

　　The three men had some problems on their trip, and many times they wanted to quit and go home. It was often very hot (140°F/60°C) during the day, and the heat made them sick. Their legs and feet hurt. Sometimes it was very windy, and they couldn"t see. One time they got lost. But they didn"t quit. After 111 days, Kevin, Ray; and Charlie successfully finished their trip across theSaharaDesert. They hugged each other and put their hands in the water of theRed Sea. Then they ran to a hotel to take a long shower.

　　词汇：

　　Stretch / strɛtʃ / v. 延伸，伸展

　　Calorie / "kælərɪ / n. 卡(路里)，小卡，大卡

　　Quit / kwɪt / v. 停止，放

　　注释：

Each day the men ran for approximately eight hours.

A:Right B:Wrong C:mentioned

Across the Deserts

　　The SaharaDesertis the largest desert in the world. It stretches across Africa fromSenegaltoEgypt. TheSaharaDesertis an unfriendly environment. During the day it"s very hot, and at night it’s sometimes very cold. It is also difficult to find water in theSahara.

　　In 2006, Kevin Lin, Ray Zahab, and Charlie Engle decided to do something very difficult. They made the decision to run across the Sahara Desert 4,300 miles (6,920km). It seemed impossible to do, but they wanted to try. The three men liked to test themselves, and this would be a very big test.

　　On the morning of November 2, Kevin, Ray, and Charlie started their trip across theSahara. Every morning they began running at 5:00. At11 a.m. they stopped and rested until 5 p.m. Then they ran again until 9:30 in the evening. Each day they ran about 40 miles (64 km). Every day it was the same thing. They got up and ran. They listened to music on their iPods, and they ran and ran.

　　Kevin, Ray, and Charlie needed to eat a lot of food during their trip. Most people need about 2,000 calories of food each day. Kevin, Ray, and Charlie needed between 6,000 and 9,000 calories every day. That"s a lot of food! They also needed to drink a lot of water.

　　The three men had some problems on their trip, and many times they wanted to quit and go home. It was often very hot (140°F/60°C) during the day, and the heat made them sick. Their legs and feet hurt. Sometimes it was very windy, and they couldn"t see. One time they got lost. But they didn"t quit. After 111 days, Kevin, Ray; and Charlie successfully finished their trip across theSaharaDesert. They hugged each other and put their hands in the water of theRed Sea. Then they ran to a hotel to take a long shower.

　　词汇：

　　Stretch / strɛtʃ / v. 延伸，伸展

　　Calorie / "kælərɪ / n. 卡(路里)，小卡，大卡

　　Quit / kwɪt / v. 停止，放

　　注释：

In the middle of the day: the men usually stopped running.

A:Right B:Wrong C:mentioned

Across the Deserts

　　The SaharaDesertis the largest desert in the world. It stretches across Africa fromSenegaltoEgypt. TheSaharaDesertis an unfriendly environment. During the day it"s very hot, and at night it’s sometimes very cold. It is also difficult to find water in theSahara.

　　In 2006, Kevin Lin, Ray Zahab, and Charlie Engle decided to do something very difficult. They made the decision to run across the Sahara Desert 4,300 miles (6,920km). It seemed impossible to do, but they wanted to try. The three men liked to test themselves, and this would be a very big test.

　　On the morning of November 2, Kevin, Ray, and Charlie started their trip across theSahara. Every morning they began running at 5:00. At11 a.m. they stopped and rested until 5 p.m. Then they ran again until 9:30 in the evening. Each day they ran about 40 miles (64 km). Every day it was the same thing. They got up and ran. They listened to music on their iPods, and they ran and ran.

　　Kevin, Ray, and Charlie needed to eat a lot of food during their trip. Most people need about 2,000 calories of food each day. Kevin, Ray, and Charlie needed between 6,000 and 9,000 calories every day. That"s a lot of food! They also needed to drink a lot of water.

　　The three men had some problems on their trip, and many times they wanted to quit and go home. It was often very hot (140°F/60°C) during the day, and the heat made them sick. Their legs and feet hurt. Sometimes it was very windy, and they couldn"t see. One time they got lost. But they didn"t quit. After 111 days, Kevin, Ray; and Charlie successfully finished their trip across theSaharaDesert. They hugged each other and put their hands in the water of theRed Sea. Then they ran to a hotel to take a long shower.

　　词汇：

　　Stretch / strɛtʃ / v. 延伸，伸展

　　Calorie / "kælərɪ / n. 卡(路里)，小卡，大卡

　　Quit / kwɪt / v. 停止，放

　　注释：

They sometimes felt sick because it was so hot.

A:Right B:Wrong C:mentioned

已知x（n）=1，其N点的DFT［x（n）］=X（k），则X（0）=（）。

A:N B:1 D:-N

已知x（n）=δ（n），其N点的DFT［x（n）］=X（k），则X（N-1）=（）。

A:N-1 B:1 D:-N+1

与.NOT.（n1<=60.AND.n1>=18）等价的条件是（）。

A:n1>60.OR.n1<18 B:n1>60.AND.n1<18 C:n1<60.OR.n1>18 D:n1<60.AND.n1>18

已知n=n₁+n₂，则（）。

A:（F／P，i，n）=（F／P，i，n₁）+（F／P，i，n₂） B:（F／P，i，n）=（F／P，i，n₁）×（F／P，i，n₂） C:（P／F，i，n）=（P／F，i，n₁）+（P／F，i，n₂） D:（P／F，i，n）=（P／F，i，n₁）×（F／P，i，n₂）