a-亚麻酸（C18：3）属于（）

A.单不饱和脂肪酸

B.N3-系列脂肪酸

C.饱和脂肪酸

D.多不饱和脂肪酸

E.n6-系列脂肪酸

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发布时间：2022-06-02

更多“a-亚麻酸（C18：3）属于（）”相关的问题

第1题

脂肪酸分子结构简化表达式C18：0表示（)。

A.18个碳原子的饱和脂肪酸

B.18个碳原子的单不饱和脂肪酸

C.18个碳原子的多不饱和脂肪酸

D.以上都不是

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第2题

If ever you are called【C1】______to introduce a speaker; it would be well for you to bear i

n【C2】______that you have a responsibility to do more than simply get up, recite a few facts, and then sit down. You have at least five major【C3】______. It is really your responsibility to【C4】______the tone for the speaker, to establish close relationship with his audience, and【C5】______the audience that the speaker is a person worth【C6】______to. In accomplishing this broad goal, you may also be able to ease the【C7】______and thus relieve your speaker【C8】______whatever feelings of stage fright or anxiety he may be【C9】______

You should also introduce your speaker's speech topic and his【C10】______, and in doing this you should make clear that the audience is aware of the speaker's【C11】______in his field. Some individuals are so well-known in their fields that it is only necessary to present them by name.【C12】______, it is far better to ignore this possibility in most【C13】______and proceed to give some of the【C14】______facts concerning his educational background, his major accomplishments, and his present role in society.

Most speakers are【C15】______to talk a- bout their own accomplishments, and it is your job to【C16】______out beforehand what these accomplishments are and then tell your audience about those that seem most interesting. This requires some【C17】______a- head.

【C18】______you will have referred to the speaker, possibly by name and title, before you formally introduce him, it is al- ways a good idea to【C19】______the title or substance of his topic as【C20】______as his name and title near the close of your introduction.

【C1】

A．for

B．in

C．up

D．on

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第3题

人体必需的脂肪酸包括哪些（)。

A.ω-3系列α-亚麻酸

B.ω-6系列亚油酸

C.硬脂酸

D.棕榈酸