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真空烤瓷炉对其温度参数和时间参数进行精密的控制。在使用中要求操作人员按严格的程序进行操作。真空烤瓷炉的温度参数和时间参数主要包括( )。A、预热温度,烤瓷温度,预热时间,烤瓷时间,最终温度持续时间 B、预热温度,烤瓷温度,预热时间,烤瓷时间,最终温度持续时间,真空烤瓷时间 C、现时温度,烤瓷温度,预热时间,烤瓷时间,最终温度持续时间,真空烤瓷时间 D、现时温度,最终温度,预热时间,升温时间,最终温度持续时间,真空烤瓷时间 E、现时温度,最终温度,预热时间,烤瓷时间,最终温度持续时间,真空烤瓷时间 在烤瓷过程中有一道工艺叫上釉,上釉有两种方法:自行上釉和分别上釉,其中自行上釉要求把烧好的瓷体在高于体瓷烧熔温度下保持数分钟,高于体瓷烧熔温度的范围是( )。A、31~40℃ B、21~30℃ C、10℃以内 D、11~20℃ E、5℃ 在烤瓷过程中不能使烤瓷件与炉膛内壁接触,如果接触,可能造成的最严重的后果是( )。A、烤瓷失败 B、烤瓷失败,烤瓷件报废 C、烤瓷件与炉膛内壁发生粘连 D、炉膛报废 E、发热体损坏
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举一反三
【单选题】下列化合物中,酸性最强的是;
A.
α-羟基蒽醌
B.
1,5-二羟基蒽醌
C.
2,6-二羟基蒽醌
D.
β-羟基蒽醌
E.
1,2-二羟基蒽醌
【简答题】Complete the following sentences with the words from Task 1. Change the word forms if necessary. 1. His father is able to ________ the family back to many centuries ago. 2. The prisoner was questi...
【单选题】Research has shown that—in both sexes and across numerous cultures—attractive people are judged to be smarter, kinder, more honest and【C1】______. With some regularity we hear about the latest beauty c...
A.
pessimistic
B.
selfish
C.
trustworthy
D.
handsome
【单选题】羟基蒽醌中,酸性最强的是
A.
1-羟基蒽醌
B.
2-羟基蒽醌
C.
1,2-二羟基蒽醌
D.
1,8-二羟基蒽醌
E.
3,6-二羟基蒽酉昆
【简答题】His father is able to ________ the family back to many centuries ago. 2. The prisoner was questioned before his ________. 3. The health problems ___________ with obesity are numerous. 4. She ...
【简答题】Fill in the blanks with words and phrases below. Change the form where necessary. donate bring to mind endeavor emerge feature interpret enroll in generate ...
【判断题】Numerous people like to watch pole vaulting bacause it can combine the grace of a gymnast with the strength of a body builder.
A.
正确
B.
错误
【简答题】C Having a meal is an easy and delightful process for most people. However, for a woodpecker( 啄木鸟 ) , it's not that . To get dinner, a woodpecker has to hit its head against a tree numerous tim...
【单选题】下列蒽醌类化合物中,酸性最强的是
A.
1-羟基蒽醌
B.
2-羟基蒽醌
C.
1,2-二羟基蒽醌
D.
1,3-二羟基蒽醌
E.
2,3-二羟基蒽醌
【单选题】羟基蒽醌中,酸性最强的是
A.
1-羟基蒽醌
B.
2-羟基蒽醌
C.
1,2-二羟基蒽醌
D.
1,8-二羟基蒽醌
E.
3,6-二羟基蒽醌
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