皮皮学，免费搜题
登录
搜题
【简答题】
自从非典型肺炎在我国部分地区出现以来，过氧乙酸作为高效消毒剂被广泛使用。过氧乙酸在常温下是一种无色有刺激性气味的液体，易挥发，易溶于醋酸。它对呼吸道黏膜有刺激性，高含量的过氧乙酸溶液对皮肤有腐蚀性。一般商品过氧乙酸是40%的醋酸溶液，使用前通常先用蒸馏水等将其稀释，消毒时可用喷雾法消毒，也可将其配制成0.2%的水溶液洗手消毒。过氧乙酸不稳定，易分解生成无毒物质，若用喷雾法消毒，过氧乙酸在半小时内就可完全分解。请你分别指出过氧乙酸的一点物理性质和一点化学性质。 物理性质： ；化学性质： 。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】A controversy erupted in the scientific community in early 1998 over the use of DNA(deoxyribonucleic acid ) fingerprinting in criminal investigations. DNA fingerprinting wasintroduced in 1987 as a met...
【单选题】What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head?（）.
A.
Bends in the piping
B.
Slowing the pumping rate
C.
Pipeline valves
D.
Backing rings for pipe welds
【简答题】A controversy erupted in the scientific community in early 1998over the use of DNA(deoxyribonucleic acid)fingerprinting in criminal investigations.DNA fingerprinting was introduced in 1987as a method ...
【单选题】The liquid flowing in the capillary is such that the difference in _____ readings taken before the capillary and after it is related to the oil viscosity.
A.
pressure
B.
velocity
C.
flow rate
D.
temperature
【单选题】Controversy erupted in the scientific community in early 1992 over the use of DNA (deoxyribonucleic acid)fingerprinting in criminal investigations. DNA fingerprinting was introduced in 1987 as a metho...
A.
some blood of the suspect
B.
prints of the suspect's fingers
C.
hairs or blood found at the scene of the crime
D.
both A and C
【单选题】When a liquid wets a solid completely，the contact angle between the liquid and the solid is( )
A.
0°
B.
45°
C.
90°
D.
135°
相关题目：
参考解析：
知识点：
题目纠错 0
发布
