the acid-base titration of aspirin, neutral ethanol is required to be
used as the solvent. What is the meaning of calling "neutral"?()
A: neutral
to the indicator used
B: pH=7
C: ethanol
to remove acidic impurities
D: It
is neutral to methyl orange
E: relative
to the tested substance
举一反三
- What<br/>does “Neutral” mean according to the article?() A: The<br/>business neither supports nor hinders its employees. B: The<br/>type of business. C: Company’s<br/>personnel management. D: Ways<br/>of classifying corporate environments.
- When<br/>the central bank allows the purchase or sale of domestic currency to<br/>have an effect on the monetary base, it is called A: an<br/>unsterilized foreign exchange intervention. B: a<br/>sterilized foreign exchange intervention. C: an<br/>exchange rate feedback rule. D: a<br/>money neutral foreign exchange intervention
- New product pricing strategies contain skimming pricing, penetration pricing and neutral pricing strategies. (<br/>)
- “In my opinion” can not be used to give a neutral opinion. ()
- The electric furnace is used extensively to produce the high-grade<br/>steel______for<br/>the manufacture<br/>of steel alloys. A: to be required B: requiring C: required D: that<br/>required
内容
- 0
Which<br/>of the following can be used as the Y-axis of the bar chart? () A: frequency B: relative<br/>frequency C: relative<br/>frequency density D: values<br/>of a variable
- 1
Dick()in<br/>America,but<br/>he has been used to eating Chinese<br/>food since he moved to China. A: used<br/>to live B: is<br/>used to live C: is<br/>used to live D: used<br/>to living
- 2
Which<br/>of following is the best choice for storage of extracted DNA<br/>sample:____ A: ultrapure<br/>water B: TE<br/>buffer C: 75%<br/>ethanol D: TBE<br/>buffer
- 3
(<br/>)<br/>When a phrase is shortened to one word which maintains the meaning<br/>of the whole, e.g. GOLD is used for GOLD METAL, the meaning of that<br/>word changes.
- 4
There are 4 main factors that control mandibular movements, except<br/>for: () A: bilateral temporomandibular joints B: the occlusal contact relationship of the teeth C: blood supply D: neutral structure E: muscle structure