有一台风机盘管,高档风量为680m3/h,冷量为4000W,按标准测试工况估算对应的

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问题:

有一台风机盘管,高档风量为680m3/h,冷量为4000W,按标准测试工况估算对应的冷水流量约为()。

A.800kg/h

B.700kg/h

C.600kg/h

D.500kg/h

考点:注册设备工程师(暖通空调)注册设备工程师(暖通空调)题库
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有一宇宙飞船到了某行星上(该行星没有自转运动),以速度v接近行星赤道表面匀速飞行,测出运动的周期为T,已知引力常量为G,则可得        (  )

A.该行星的半径为

B.该行星的平均密度为

C.无法测出该行星的质量

D.该行星表面的重力加速度为

题型:单项选择题

有利于录音室混响时间适当、声音扩散均匀的措施是()。

A.铺地毯 

B.设双层门 

C.采用厚墙 

D.配置音频处理设备

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用阳离子交换树脂分离以下氨基酸,Asp(pI=2.97)、His(pI=7.59)、Arg(pI=10.76)和Met(pI=5.79) 混合物,用pH 7的缓冲液洗脱时,哪种氨基酸先洗脱下来并说明原因。

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In this section you will find after each of the passages a number of questions or unfinished statements about the passage, each with 4 (A, B, C and D) choices to complete the statement. You must choose the one which you think fits best. Then blacken the corresponding letter as required on your Machine-scoring ANSWER SHEET. The time for this section is 70 minutes.

Social control refers to social processes, planned or unplanned, by which people are taught, persuaded, or forced to conform to norms. In every society, some punishments or negative sanctions are established for deviant behavior. Without deviant behavior there would not be need for social control and without social control there would not be a way of recognizing the boundary between the acceptable and the unacceptable.
Social control may be either formal or informal. Informal mechanisms include expressions of disapproval by significant others and withholding of positive rewards for disapproved behavior. Most people internalize norms in the course of socialization. This is any group’s most powerful protection against deviance, in that the individual’s own conscience operates as an agent of social control. When informal sanctions fail, formal agents of social control may be called upon. In contemporary society, such formal agents and agencies include psychiatry and other mental health professions; mental hospitals; police and courts of law; prisons; and social welfare agencies. All these formal agents function to limit, correct, and control violation of norms. Conflict theorists would also point out that social control agents and systems tend, in any society, to serve the interests of powerful groups and to enforce the norms most beneficial to those who make the rules and who, therefore, define unacceptable behavior.
Social control, whether formal or informal, has a dual function. First, it punishes the wrongdoer and reaffirms the boundaries of acceptable behavior. Second, and less recognized, it regulates the manner in which deviants are treated.

Social control refers to processes by which______.

A.norms are developed

B.norms are enforced

C.people are educated and trained

D.people are rewarded and punished

题型:单项选择题

共同就位道由前向后戴入的模型倾斜方向是()

A.模型向后倾斜

B.模型向左倾斜

C.模型向前倾斜

D.模型向右倾斜

E.模型平放

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