【单选题】【消耗次数:1】
为了控制加热炉出口温度可以通过监控炉管表面温度来实现。( )
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错误
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相关题目
【判断题】 步进式加热炉的加热质量比推钢式加热炉的好。
①  正确
②  错误
【单选题】 某加热炉温度控制系统如图所示,则该系统的操纵变量是(),被控变量是()
①  原料油流量原料油出口温度
②  原料油流量燃料量
③  燃料量原料油出口温度
④  燃料量原料油流量
【单选题】 进行干燥过程的必要条件是干燥介质的温度大于物料表面温度,使得( )。
①  物料表面所产生的湿分分压大于气流中湿分分压;
②  物料表面所产生的湿分分压小于气流中湿分分压;
③  物料表面所产生的湿分分压等于气流中湿分分压;
④  物料表面所产生的湿分分压大于或小于气流中湿分分压。
【多选题】 农田中土壤表层温度与裸地表面温度的日变化规律是:()
①  日间农田低,裸地高
②  夜间农田高,裸地低
③  日间农田、裸地都高
④  夜间农田、裸地都低
【单选题】 三段式加热炉均热段炉温要比加热段()以确保加热质量。
①  A炉温低
②  B炉温高
③  C炉温一样
④  D不一定
【判断题】 实际物体的吸收率仅仅取决于物体的本身性(物体的种类、表面温度、表面状况)。
①  正确
②  错误
【判断题】 如果环境温度过低,可以用酒精灯适当加热平板,提升反应温度。
①  正确
②  错误
【判断题】 对混凝土浇筑后用塑料薄膜及草袋覆盖,可使混凝土表面封闭,防止混凝土表面脱水产生干缩裂缝;可使混凝土的水化热降温延缓,提高混凝土表面温度,减小混凝土内外计算温差,防止产生过大的温度应力和产生温度裂缝。
①  正确
②  错误
【单选题】 塔底温度过低的预塔顶温度低可以( )来调节。
①  加他冷却水用量
②  提高蒸汽
③  减少主塔进料
④  降低蒸汽
【判断题】 金属加热温度越高,可锻性越好。
①  正确
②  错误
随机题目
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①  with
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①  comprise
②  compose
③  contain
【单选题】 —Our son has picked up some bad habits recently, and I am really worried about it.— .
①  Yes, they have some bad habits.
②  Cheer up. I believe he will overcome it.
③  Well, he like drawing.
【单选题】 — As we all know, the invention of the Internet was a great breakthrough in human history. ___________?— Yes, of course.
①  What is your opinion
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③  Do you think so
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【单选题】 The caregivers hope the elderly people will soon.(考点:recover)
①  regain
②  restore
③  recover
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【单选题】 —Do you have much experience with caring for babies?— .
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②  No, you are freshmen. You should work hard.
③  Yes, they are. They are very cute.
【单选题】 —Linda, what’s wrong with your grandmother?— .
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②  She hurt her leg.
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②  Well, it is hard to see.
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【单选题】 She chose to be a teacher, but personally I’d to be a caregiver.
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