儿童发展的特点有__________、__________、__________。

在低压供电系统中用来整定保护装置灵敏度的电量为( )。

A．系统最小运行方式下单相短路电流

B．系统最大运行方式下单相短路电流

C．系统最大运行方式下二相短路电流

D．系统最小运行方式下二相短路电流

患者男，65岁。1h前排黑粪1次，总量约500ml，伴头晕、心悸、出虚汗。30min前来医院途中呕吐咖啡色液体1次，短暂晕厥1次。

目前恰当的处理包括（提示：该患者既往有高血压病史10年，冠心病病史5年，服用阿司匹林3年。查体：T36.6℃，P120次/min，R18次/min，BP85/50mmHg；肥胖体型，口唇黏膜苍白，浅表淋巴结未触及肿大；巩膜无黄染，双侧瞳孔等大正圆，对光反射灵敏；双肺呼吸音清，心界不大，心律齐，无杂音；腹部膨隆，未见胃肠型及蠕动波，未见腹壁静脉曲张，腹软，无压痛、反跳痛及肌紧张，肝、脾肋下未触及，未触及异常包块，移动性浊音（－），肠鸣音6次/min，未闻及血管杂音；病理反射未引出。）（）

A.监测血压、心率，开放静脉，加快输液速度

B.安排血常规、肝功能、肾功能、心肌酶、凝血功能等生化检查

C.粪常规＋隐血

D.胸部X线片

E.心电图

F.腹部超声

G.颅脑CT

H.急诊胃镜检查

I.输血

J.静脉滴注止血药

案例三

一般资料：求助者，男性，23岁，实习医生。
以下是某求助者与咨询师的一段对话：
咨询师：您遇到什么问题了
求助者：一个月以前我与我的初恋分手了，我很痛苦。
咨询师：为什么要分手呢
求助者：女友说和我在一起感觉不踏实，所以提出和我分手。
咨询师：哦!
求助者：我为她付出了很多，我一心一意地爱着她，为什么她一点都不知道珍惜呢
咨询师：为此你感觉很痛苦，是吗
求助者：是的，同学都说失恋很正常，说不定以后还会找到比她好的多的呢。
咨询师：是啊，你还小，以后有很多机会的。
求助者：我明白，但是我想到她就感觉很痛苦。最近要考研，由于竞争激烈，感觉有很大的压力，自己却看不进去书，真是太痛苦了。我最近常常喝酒，失眠，学习效率明显下降。希望您能帮助我走出困境。
心理咨询师了解到的情况：求助者衣着整洁，仪表端庄，性格温和。南方人。家境很好，家庭教育使其养成了自我要求严格、做事讲究规则的习惯。

本案例中求助者的症状应该是( )。

A．一般心理问题

B．抑郁性神经症

C．严重的心理疾病

D．焦虑性神经症

Everyday some 16m barrels of oil leave the Gulf through the Strait of Hormuz. That is enough to fill a soft-drink can for everyone on earth, or to power every motor vehicle on the planet for 25 miles (40kin). Gulf oil accounts for 40% of global trade in the sticky stuff. More important, it makes up two-thirds of known deposits. Whereas at present production rates the rest of the world’s oil reserves will last for a mere 25 years, the Gulf’s will last for 100. In other words, the region’s strategic importance is set to grow and grow.

Or at least so goes the conventional wisdom, which is usually rounded out with scary talk of unstable supplies, spendthrift regimes and a potential fundamentalist menace. Yet all those numbers come with caveats. A great deal of oil is consumed by the countries that produce it rather than traded, so in reality the Gulf accounts for less than a quarter of the world’s daily consumption. As for reserves, the figures are as changeable as a mirage in the desert. The most comprehensive research available, conducted by the US Geological Survey, refers to an "expected" total volume for global hydrocarbon deposits that is about double current known reserves. Using that figure, and throwing in natural gas along with oil, it appears that the Gulf contains a more moderate 30% or so of the planet’s future fossil-fuel supplies. Leaving out the two Gulf states that are not covered in this survey--Iran and Iraq--the remaining six between them hold something like 20% of world hydrocarbon reserves, not much more than Russia.

All the same, it is still a hefty chunk; enough, you might think, to keep the people living atop the wells in comfort for the foreseeable future. But you might be wrong. At present, the nations of the Gulf Cooperation Council have a combined national income roughly equal to Switzerland’s, but a population which, at around 30m, is more than four times as big. It is also the fastest-growing on earth, having increased at nine times the Swiss rate over the past quarter-century. Meanwhile the region’s share of world oil trade has fallen, as has the average price per barrel.

As a result, the income per person generated by GCC oil exports has been diminishing since the 1970s. True, surging demand from America and Asia has recently boosted the Gulf’s share of trade, but the medium-term outlook for oil pries remains weak. Combined with continued growth in oil consumption, this should create sustained upward pressure on prices. And high oil prices will speed the search for alternatives. Who knows, in 20 years’ time fuel cells and hydrogen power may have started to become commercial propositions.

In the eyes of the author, conventional opinion on the strategic importance of the Gulf oil is（）

A. reassuring

B. changeable

C. paradoxical

D. exaggerated

电气施工图一般由（）组成。

A、设计，说明

B、电气系统图

C、电气平面图

D、基础图