【简答题】Video2-2: Lines connecting the blocks indicate. 1 . with directional arrows indicating the process flow. The . 2 . is the actual variable maintained in the process. In this example, the contro...
【判断题】Condensation method process: oil and gas into the precooling under atmospheric pressure precooling at first, the temperature of the oil and gas down to 4 ℃, to remove most of the oil and gas water vap...
【单选题】Which of the following hypotheses about the relation-ship between the temperature and the density of a solidis best supported by the data in Figure 2 ? As the tem-perature of a solid increases, the de...
【简答题】Questions& Answer 1. Briefly explain the procedure of casting? 2. What is the difference in composition between steel and cast iron? 3.Why is the transformation rate zero when the temperature of auste...