下面哪项不属于职业卫生有关的健康教育（） A.职业卫生法制教育 B.营养与合理膳食教

真空中三个相同的导体小球A、B和C，A和B分别带+3Q、-Q的电荷（A、B可看成点电荷）分别固定在两处，两球间库仑力是F，用不带电的小球C，先后跟A和B来回反复接触许多次，然后移去C，则A、B间的库仑力变为F的（     ）

A．1/3         B．3/4          C．4/27        D．16/27

某同学利用如图所示装置测定空气中氧气的含量，先用弹簧夹夹住橡皮管，点燃红磷，伸入瓶中并塞上瓶塞．等红磷燃烧熄灭后再打开弹簧夹，

（1）该反应的文字表达式为：______，

（2）打开弹簧夹后，发现集气瓶中的水少于其容积的

1

5

，可能的原因有（写出两点）______、______．

男性，25岁，因发热、食欲减退、恶心3周，皮肤黄染1周来诊。患者3周前无明显诱因发热达38℃，无发冷和寒战，不咳嗽，但感全身不适、乏力、食欲减退、恶心、右上腹部不适，偶尔呕吐，曾按上感和胃病治疗无好转。1周前皮肤出现黄染，尿色较黄，无皮肤瘙痒，大便正常，睡眠稍差，体重无明显变化。既往体健，无肝炎和胆石症史，无药物过敏史，无输血史，无疫区接触史。

查体：T37.5℃，P80次/分，R20次/分，Bp120/75mmHg，皮肤略黄，无出血点，浅表淋巴结末触及，巩膜黄染，咽(-)，心肺(-)，腹平软，肝肋下2cm，质软，轻压痛和叩击痛，脾侧位刚及，腹水征(-)，下肢不肿。化验：血Hb126g/L，WBC5.2×10/L，N65%，L30%，M5%，PLT200×10/L，网织红细胞1.0%，尿蛋白(-)，尿胆红素(+)，尿胆原(+)，大便颜色加深，隐血(-)，问最可能的诊断是什么?并请说明诊断依据、鉴别诊断、进一步检查及治疗计划。

国家垄断资本主义使生产、资本、管理社会化程度空前提高，这表明（）

A．为资本主义向社会主义过渡准备了充分的物质条件

B．资本主义基本矛盾得到解决

C．经济危机彻底得以消除

D．资本主义制度具有生命力

I always have a difficult time choosing original birthday presents. My imagination never seems to get beyond ties, handkerchiefs, or pairs of socks. But, strangely enough, it did not take me long to decide on Tom’s birthday present. For the first time in my life I had a good idea—I would buy him a bottle of champagne. Before the party began, Tom suggested that I should open the bottle. I put it between my knees and began to pull, but it remained firmly corked. Soon a crowd gathered round to watch the fight between me and the bottle. I could hear all sorts of" helpful" suggestions from the guests like "Break the top off", "Use your teeth!" etc. But I was losing the bottle. We were struggling on the floor together, when all of a sudden there was a loud "pop!" and the cork shot up into the air, while the angry bottle showered everybody with champagne!

What is the good idea

A．I should give him nothing.

B．Tom liked the gift very much.

C．I should buy him a bottle of champagne.

D．I would make the champagne shower everybody.