单项选择题：检修车站行车设备，影响其使用时，事先须登记，并经（）同意后签认，方可开始。A.信号员

题型：单项选择题 A1/A2型题

局限性淋巴结肿大见于（）。

A.传染性单核细胞增多症

B.Virchow淋巴结

C.急性白血病

D.淋巴瘤

E.慢性淋巴结炎

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题型：单项选择题

女，45岁。突发右上腹及剑突下刀割样绞痛伴阵发性加剧1天，发病后12小时寒战高热、巩膜黄染，剑突偏右侧深压痛，右上腹部轻度肌紧张，体温 38.5℃，脉搏90次/分，血压16/ 10kPa，WBC 14×10⁹/L，血清总胆红素30μmol/L，尿胆原(-)，尿胆素 (++)，应诊断为

A．溃疡病穿孔
B．急性胰腺炎
C．急性胆囊炎
D．胆总管结石急性发作
E．高位阑尾炎

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题型：实验题

(12分)实验室常利用甲醛法测定(NH4)2SO4样品中氮的质量分数，其反应原理为：

4NH₄^＋＋6HCHO3H^＋＋6H₂O＋(CH₂)₆N₄H_＋[滴定时，1 mol(CH₂)₆N₄H＋与1 mol H^＋相当]，然后用NaOH标准溶液滴定反应生成的酸。某兴趣小组用甲醛法进行了如下实验：

步骤Ⅰ　称取样品1.500 g。

步骤Ⅱ　将样品溶解后，完全转移到250 mL容量瓶中，定容、充分摇匀。

步骤Ⅲ　移取25.00 mL样品溶液于250 mL锥形瓶中，加入10 mL 20%的中性甲醛溶液，摇匀、静置5 min后，加入1～2滴酚酞试液，用NaOH标准溶液滴定至终点。按上述操作方法再重复2次。

(1)根据步骤Ⅲ填空：

①碱式滴定管用蒸馏水洗涤后，直接加入NaOH标准溶液进行滴定，则测得样品中氮的质量分数________(填“偏高”“偏低”或“无影响”)。

②锥形瓶用蒸馏水洗涤后，水未倒尽，则滴定时用去NaOH标准溶液的体积________(填“偏大”“偏小”或“无影响”)。

③滴定时边滴边摇动锥形瓶，眼睛应观察________。

A．滴定管内液面的变化

B．锥形瓶内溶液颜色的变化

④滴定达到终点时，酚酞指示剂由________色变成______色。

(2)滴定结果如下表所示：

滴定次数待测溶液的体积/mL 标准溶液的体积/mL

滴定前刻度滴定后刻度

1 25.00 1.02 21.03

2 25.00 2.00 21.99

3 25.00 0.20 20.20

若NaOH标准溶液的浓度为0.101 0 mol·L－1，则该样品中氮的质量分数为________。

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题型：单项选择题

Passage One

With the possible exception of equal rights, perhaps the most controversial issue across the United States today is the death penalty. Many argue that it is an effective deterrent (威慑) to murder, while others maintain there is no convincing evidence that the death penalty reduces the number of murders.
The principal argument advanced by those opposed to the death penalty, basically, is that it is cruel and inhuman punishment, that it is the mark of a brutal society, and finally that it is of questionable effectiveness as a deterrent to crime anyway. In our opinion, the death penalty is a necessary evil. Throughout recorded history there have always been those extreme individuals in every society who were capable of terribly violent crimes such as murder. But some are more extreme than others.
For example, it is one thing to take the life of another in a fit of blind rage, but quite another to coldly plot and carry out the murder of one or more people in the style of a butcher. Thus, murder, like all other crimes, is a matter of relative degree. While it could be argued with some conviction that the criminal in the first instance should be merely isolated from society, such should not be the fate of the latter type murderer.
The value of the death penalty as a deterrent to crime may be open to debate. But the overwhelming majority of citizens believe that the death penalty protects them. Their belief is reinforced by evidence which shows that the death penalty deters murder. For example, from 1954 to 1963, when the death penalty was consistently imposed in California, the murder rate remained between three and four murders for each 100 000 population. Since 1964 the death penalty has been imposed only once, and the murder rate has risen to 10.4 murders for each 100 000 population. The sharp climb in the state’s murder rate, which began when executions stopped, is no coincidence (巧合). It is convincing evidence that the death penalty does deter many murderers. If the bill reestablishing the death penalty is vetoed (否决), innocent people will be murdered—some whose lives may have been saved if the death penalty were in effect. This is literally a life or death matter. The lives of thousands of innocent people must be protected.

The passage attempts to establish a relationship between ______ .

A．the importance of equal rights and that of the death penalty

B．executions and murders

C．the murder rate and the imposition of the death penalty

D．the effects of execution and the effects of isolation

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题型：多项选择题

在邮政服务质量中，综合性反映用户满意程度的指标有( )

A．用户满意率

B．用户满意度

C．用户满意度指数

D．邮政局所服务半径

E．邮政局所密度

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检修车站行车设备，影响其使用时，事先须登记，并经（）同意后签认，方可开始。A.信号员

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