(10分)一居民小区有440户,以前每户平均消耗电功率为100W,使用的区间变压

题型:计算题

问题:

(10分)一居民小区有440户,以前每户平均消耗电功率为100W,使用的区间变压器匝数比为165:6,恰好能使额定电压为220V的用电器正常工作,现在因家用电器增加,每户平均消耗的电功率为250W,若变压器输入电压仍为6600V,区间输电线线路不变,为了使家用电器正常工作,需换用区间变压器,则此变压器的匝数比为多少?

考点:变压器电压、电流、电功率与匝数的关系
题型:计算题

患者,男性,40岁,HBsAg(+)30年,2个月来发热并右上腹痛。查体:体温39℃,肝肋下5cm,中等硬度,表面稍不平,压痛(+),甲胎蛋白(+)。

提示:AFP400ug/L,CT,B超均(-)提问:应如何诊断原发性肝癌,排除活动性肝病()。

A.ALT同步升降持续一个月

B.ALT同步升降持续二个月

C.ALT正常,AFP>200us/L,持续一个月

D.ALT正常,AFP>200ug/L,持续8周

E.ALT正常,AFP>200ug/L,持续8个月

题型:计算题

“冷战”期间爆发了美苏发动或参与的局部“热战”,其中最主要的是(   )

①柏林危机 ②朝鲜战争 ③越南战争 ④扶蒋 * * 打内战

A.①②③④

B.①②③

C.②③④

D.②③

题型:计算题

Desmond, Carls, Russel, Malcolm, Warren正计划买一辆小车。阅读他们的情况和下面六种小车的介绍(选项A、B、C、D、E、F),选出符合各自需求的最佳选项(选项中有一项是多余选项)。请将答案用黑色字迹钢笔或签字笔写在非选择题答题卷标号为56—60的相应位置上。
56.Desmond is young and promising athlete. Having won a champion in an important international game, he decides to buy a car to develop a brighter future. Of course, the car must be extremely fast and is especially fit for him, a sportsman.
57.Carls has just been admitted to a famous university hundred of kilometers away from her hometown and has been permitted to buy a car. As a young girl, she certainly put safety factors above all.
58.Russel, a farmer in a mountainous area, is growing hundreds of acres of crops. To transport his goods to town timely, he wants to buy a car. He hopes the car will run very fast and, first of all, must meet the natural conditions.
59.Fighting in the commercial circle (商界) and getting a great success, Malcolm makes a fortune. With an aggressive ambition, he decides to buy a luxury car to develop an even brighter future.
60.Warren is a merchant traveling to different parts of the country in any weather situation, good or bad. He expects to have a satisfactory car to make his career better.
A
Provided by an advanced – design Triton engine, with a perfect cooling system, and plenty of pulling power. Passenger safety is excellently strengthened by the Second Generation double airbags and side door intrusion beams. Luxury packages with deluxe accommodation (良好的空间
B
Was it wind? Or was it fear? Chances are the both. Equipped with the first four – cam 32 – valve  V8 engine offered in a sport – utility (实用) vehicle. An advanced source of power generating 320 Ib – ft of twisting force and 230 horsepower.
C
A spirited package that takes the zoom – zoom (疾行声) ethos into the mainstream(主流社会). An aggressive, confident look, one that’s backed by impressive dynamics. Engaging all the senses in the driving experience. Bottom line: If you’re in the market for a sedan. Stop by our store and  try on one of ours. Good luck will be with you
D
Style quality and high technology are the ingredients (要素) which have enabled Maserati to create some of the fastest and most advanced road cars in the world.
It’s one thing to climb a Mountain. It’s quite another look good doing it.
E
302–hp best–in–classV8   3rd – row seating. And available climate –controlled front seats. The new Lincoln Aviator. Like Navigator, just smaller, Proof that magnificence comes in all size. There are those who travel and those who travel well.
F
The cars with shapes we’d seen only in our dreams. The land – based rocket ships. With cockpits (驾驶座) full of computers and video screens. The cars that are invisible to the wind. Where are the cars we were promised?
 
计划买车的人      供选择的汽车
56.Desmond     A.Car A
57.Carls          B.Car B
58.Russel        C.Car C
59.Malcolm     D.Car D
60.Warren       E.Car E
F.Car F
题型:计算题

(a) In relation to company law, explain what is meant by ‘winding up’. (2 marks)

题型:计算题

酸溶液灼烧皮肤正确自理方法是()。

A.立即用大量水冲洗,再用稀NaHCO3溶液洗

B.立即用抹布抹去,再用水冲洗

C.立即用稀氨水冲洗

D.立即用NaOH溶液冲洗

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