用鞋带将敌双臂,两拇指顺着并在一起,用鞋带在()上缠绕数圈打一死结即可。
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什么叫过热器的汽温特性?对流,辐射,半辐射式过热器各具有怎样的汽温特性?
Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle turbo-charged diesel engine?()
A. Clogged air intake falters
B. Piston blow-by
C. A defective after-cooler
D. Faulty exhaust valve
教育部对申请国家奖学金学生的学习成绩排名与综合考评成绩排名的要求是什么?