浓缩塔投酸前,要先保证()有液位,保持溢流。A.稀酸高位槽 B.镁尾水槽 C.塔尾水

题型:单项选择题

问题:

浓缩塔投酸前,要先保证()有液位,保持溢流。

A.稀酸高位槽

B.镁尾水槽

C.塔尾水槽

D.脱盐水槽

考点:硝酸生产工硝酸生产工技师、高级技师硝酸生产工技师、高级技师题库
题型:单项选择题

关于脾脏CT扫描技术的描述,错误的是

A.能区分良恶性肿瘤

B.采用软组织扫描模式

C.病人平静呼气后摒住呼吸

D.检查前半小时口服阴性对比剂

E.扫描范围自膈面向下扫完整个脾脏

题型:单项选择题

关于女用短效口服避孕药的副作用,说法正确的是

A.白带增多是孕激素作用的结果

B.服药期间在月经周期前半期发生不规则少量出血,系雌激素不足引起

C.能使经期延长,经量增多,故不适用经量多的妇女

D.类早孕反应是由于孕激素刺激胃黏膜所致

E.体重增加系孕激素引起钠水潴留的结果

题型:单项选择题


A large part of effective leadership is dependent on something called "style". But style is difficult to teach, and what makes one leader great and another mediocre is not easily defined. Leadership always implies power, and a broad definition in this context is that leadership includes the power to influence thoughts and actions of others in such a way that they achieve higher satisfaction and/or performance. Over the past century, there have been three major approaches to understanding leadership.
Identifying leadership traits, or the physical and psychological characteristics of leaders, was the first formal approach, and had a lot of intuitive appeal. It owed its origins to the mm of the century (about 1904) when trait studies began. At this time most American leaders came from certain wealthy families, the vast majority were white males, and there were some social norms about what leaders looked like (tall, square jaw, well groomed, etc.). The original assumption that "leaders are born, not made" has been discredited, because there were too many exceptions to the traits to give them any credibility. Beginning after World War II, in sharp contrast to the trait approach, the behavioral approach looked at what a leader does, what behaviors leaders use that set them apart from others. This approach assumed that leadership could be learned. Virtually all of the studies focused on classifying behaviors according to whether they fell into a process or "people approach" (satisfying individual needs), or a "task approach" (getting the job done). The basis for this classification was in the discovery in social psychology that every group needs someone to fulfill both these roles in the group for it to be effective. The earliest of these studies began in Ohio State University and the University of Michigan in the late 1940s. Many of the early trait and behavioral writers tried to make their ideas applicable to all leadership situations. The earliest situational approach to leadership was developed in 1958. This approach strived to identify characteristics of the situation that allowed one leader to be effective where another was not. The trend later developed toward the third approach, understanding the unique characteristics of a situation and what kind of leadership style best matches with these.

What was the assumption of the behavioral approach

A.That leaders are born, not made.

B.That leadership could be learned.

C.That leadership could be classified into two functions.

D.That every effective group needs someone to fill each of the two roles.

题型:单项选择题

为减少手术室麻醉废气污染,下列哪些操作方法正确()

A.选用合适的麻醉面罩

B.先调好NO与O的混合比例后,再与气管导管连接

C.气管内吸引前,先关掉麻醉气源

D.麻醉开始前给蒸发器添加麻醉药

E.给蒸发器内加药时防止外漏

题型:单项选择题

韶山3B型电力机车吊杆上部用()和构架上的电机悬挂吊座相连。

A.螺钉

B.销

C.捐栓

D.键

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