煤作为燃料使用首先要了解的指标是什么？
煤作为燃料使用首先要了解的指标是什么？
A.煤的密度
B.煤的灰分
C.煤的熔融性
D.煤的热值
正确答案：煤的热值
Tag：煤化学 热值 灰分
时间：2022-03-03 16:28:34
- 1.Simile, metaphor and abstract words help to generate imagery successfully.
- 2.Philosophy, drama, car, golf, Mona Lisa, humility, progress and creative activity are all abstract words.
- 3.Using language inclusively means that speakers should choose inclusive language to show respect for the diversity of the world.
- 4.Parallelism, antithesis, repetition and alliteration are the four basic stylistic devices which help to create imagery to the audience.
- 5.Profound implications usually should be presented in neat, simple, and familiar words rather than big, bloated and unfamiliar words.
- 6.When referring to both females and males, it is better to use the word “man”.
- 7.Alliteration refers to the repetition of the initial consonant sound of close or adjoining words, such as saints and sinners, weal and woe.
- 8.Generally speaking, complicated, abstract and unfamiliar words sound more impressive to the listeners.
- 9.Denotative meaning of a word usually refers to what the word suggests or implies, which is more variable, figurative and subjective
- 10.When presenting visual aids, we should always develop a backup plan.