多媒体信息不包括A．音频、视频 B．声卡、光盘 C．影像、动画 D．文字、图形

X线光子与构成原子的内壳层轨道电子碰撞时，将其全部能量都传递给原子的壳层电子，原子中获得能量的电子摆脱原子核的束缚，成为自由电子（光电子），而X线光子则被物质的原子吸收，这种现象称为光电效应。 关于光电效应叙述正确的是（）

A.部分能量传递给原子的壳层电子

B.原子变成负离子

C.放出特征X线

D.产物有光电子、负离子

E.没有电子跃迁

粗CuO是将工业废铜、废铜合金等高温焙烧而成的，杂质主要是铁的氧化物及泥沙。以粗CuO为原料制备胆矾的主要流程如下：

经操作I得到粗胆矾，操作III得到精制胆矾。两步操作相同，具体包括蒸发浓缩、冷却结晶、过滤、洗涤、干燥等步骤。

已知：、、转化为相应氢氧化物时，开始沉淀和沉淀完全时的pH如下表：

开始沉淀时的pH	2.7	7.6	5.2
完全沉淀时的pH	3.7	9.6	6.4

 

（1）溶解、过滤需要用到玻璃棒，它的作用是　　　　　　　　　　　　　　　　　　　　　　。

（2）写出加入3% H₂O₂后发生反应的离子方程式　　　　　　　 　　　　　　　　。（原溶液显酸性）。

（3）加稀氨水调节pH应调至范围　　　　　　。下列物质可用来替代稀氨水的是　　　　。（填字母）

A．NaOH      B．Cu(OH)₂      C．CuO        D．NaHCO₃

（4）操作III析出胆矾晶体后，溶液中还可能存在的溶质为CuSO₄、H₂SO₄、________________。

（5）某学生用操作III所得胆矾进行“硫酸铜晶体结晶水含量”的测定，数据记录如下表所示：

	第一次实验	第二次实验
坩埚质量（g）	14.520	14.670
坩埚质量晶体质量（g）	17.020	18.350
第一次加热、冷却、称量（g）	16.070	16.989
第二次加热、冷却、称量（g）	16.070	16.988

两次都无须再做第三次加热、冷却、称量，理由是　　　　　　　　　　　　　　　　　　　　　　　，该生此次实验的相对误差为　　　　　　　%（保留1位小数），产生实验误差的原因可能是

　　　　　　　　（填字母）。

A．加热前称量时坩埚未完全干燥      B．该胆矾中含有受热不分解的杂质

C．加热后坩埚放在干燥器中冷却      D．玻璃棒上沾有的固体未刮入坩埚

某一高血压伴充血性心力衰竭患者，同时患有肾上腺嗜铬细胞瘤和外周血管痉挛性疾病，应选用的治疗药物是（）

A.强心苷

B.糖皮质激素

C.ACEI

D.酚妥拉明

E.氨茶碱

企业网站和微博运营相比，下列说法正确的是（）

A.两者都需要有价值的内容

B.企业网站的信息更严谨

C.企业微博内容表现形式可以比企业网站灵活

D.两者运营效果评价的指标基本一致

In the end, a degree of sanity prevailed. The militant Hindus who had vowed to breach a police cordon and start the work of building a temple to the god Ram at the disputed site of Ayodhya decided to respect a Supreme Court decision barring them from the area. So charged have Hindu-Muslim relations in India become in recent weeks, as the declared deadline of March 15th neared, that a clash at Ram’s supposed birthplace might well have provoked bloodshed on an appalling scale across the nation. It has, unfortunately, happened often enough before.
But the threat has not vanished. The court’s decision is only an interim one, and the main Hindu groups have not given up on their quest to build their temple. Extreme religious violence, which seemed in recent years to have faded after the Ayodhya-related explosion of 1992--1993, is again a feature of the political landscape. Though faults lie on both sides (it was a Muslim attack on Hindus in a train in Gujarat that started the recent slaughter), the great bulk of victims were, as always, Muslims. Once again, educated Hindus are.to be heard inveighing against the "appeasing" of Muslims through such concessions as separate constitutional status for Kashmir or the right to practice Islamic civil law. Once again, the police are being accused of doing little or nothing to help Muslim victims of rampaging Hindu mobs. Once again, India’s 130m Muslims feel unequal and unsafe in their own country. Far too many Hindus would refuse to accept that it is “their own country" at all.
The wonder of it, perhaps, is that things are not worse. While the world applauds Pakistan for at last locking up the leaders of its extreme religious groups, in India the zealots still support, sustain and to a degree constitute the government. The BJP, which leads the ruling coalition, was founded as a political front for the Hindu movement. It is simply one, and by no means the dominant, member of what is called the Sangh Pariwar, the "family of organizations". Other members of the family are much less savoury. There is the VHP, the World Hindu Organization, which led the movement to build the Ram temple. There is the Bajrang Dal, the brutalist "youth wing" of the VHP. There is substantial evidence that members of the VHP and the Bajrang Dal helped to organize the slaughter of hundreds of Muslims in Gujarat after 58 Hindus were killed on a train as they returned from Ayodhya.

The word "rampaging" (Para 2) denotes
[A] "dominance."
[B] "violence."
[C] "deference."
[D] "acceptance.\