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【多选题】
热能在热机中的转化过程包括A.
进气过程
B.
压缩过程
C.
燃烧过程
D.
膨胀过程
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举一反三
【单选题】Those generally used additives for cooling water are either anti-corrosion oils or inorganic_____.
A.
gases
B.
paints
C.
inhibitors
D.
detergent
【单选题】From the passage, we can infer that _______.
A.
lavender and citrus oils are seldom used in spas.
B.
Dallas and Dynasty are favorite topics for women in 2002.
C.
the spa industry develops very fast in recent years in the U. S.
D.
spas are becoming mainstream for the American super-wealthy.
【单选题】Cost of oils used to lubricate production machinery
A.
Production costs
B.
Selling and distribution costs
C.
Administration costs
D.
Research and development costs
【单选题】According to the news item, partially hydrogenated oils are used to______.
A.
prevent heart attacks
B.
decrease food cost
C.
lower bad cholesterol
D.
enhance food flavor
【简答题】任务型读写。 From the beginning of human history, people have used oils from seeds and nuts.Most of the time these oils are used as food, especially in cooking.But sometimes they have other uses.For example...
【简答题】专业术语“IT”的中文含义是 ( )。
【单选题】—What do you think of the performance yesterday evening? —Great! is o’Henry style.
A.
The surprising ending
B.
The surprised ending
C.
A surprising ending
D.
A surprised ending
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