问题 问答题 简答题

气瓶的使用有哪些规则?

答案

参考答案:

对在正常环境温度(-40~60℃)下使用\公称压力为1.0~30MPa(表压)\公称容积为0.4~1000L\盛装永久气体或液化气的气瓶,应遵守以下的使用规则:

(1)不得擅自更改气瓶的钢印和颜色标识;

(2)气瓶使用前应进行安装状况检查,对盛装气体进行确认;

(3)气瓶放置地点不得靠近热源,距明火应在10米以外。盛装易起聚全反应或分解反应气体的气瓶,应避开放射性射线源;

(4)气瓶立放时应采取防止倾倒措施;

(5)夏季应防止曝晒;

(6)严禁敲击、碰撞;

(7)严禁用温度超过40℃的热源对气瓶加热;

(8)瓶内气体不得用尽,必须留有剩余压力:永久气体气瓶的剩余压力应不小于0.05MPa;液经气体气瓶应留有不小于0.5~1.0%规定充装量的剩余气体;

(9)严禁在气瓶上进行电焊划弧;

(10)在可能造成回流的使用场全,使用设备上必须配置防止倒灌的装置,如单向阀、止回阀、缓冲罐等;(11)液化石油气瓶用户,不得将近气瓶内的液化石油气向其它气瓶倒装,不得自行处理气瓶内残液;(12)气瓶投入使用后,不得对瓶体进行挖补,焊接修理。

综合
单项选择题

A new study finds that blacks on death row (1) of killing whites are more likely to be executed than whites who kill minorities. It also concludes that blacks who kill (2) minorities are (3) likely to be executed than blacks who kill whites. For example, there is more than a twofold greater risk that an African-American who killed a white will be executed than a white person who kills a (4) victim. A Hispanic is at least 1.4 (5) more likely to be executed (6) such an offender kills a white.

The researchers of the study believe that there are two (7) explanations.. First, prosecutors often win (8) office if they win well-publicized cases. When a black kills a white, such killings gets more (9) and this idea can be (10) by many famous cases. (11) , the court judges at the state level are often (12) to elections, called retention elections. Retention election or judicial retention within the United States court system, is a periodic process, in which the voter (13) approval or disapproval for the judges presently (14) their position, and a judge can be removed from the position if the (15) of the citizens vote him or her out. Just as the researchers (16) out, death penalty is (17) political.

The findings of the study, in short, show that American justice systems clearly (18) white lives more than those of blacks or Hispanics. The researchers also say their findings (19) serious doubts about (20) that the U.S. criminal justice system is colorblind.

5()

A.longer

B.years

C.time

D.times