采用同高并列式的催化裂化装置反应器压力与再生器压力相比()。
A、相近
B、高
C、低
D、无法确定
参考答案:A
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A. come
B. came
C. having come
D. coming
某点用测压管测得高度如图所示,液体为水,环境大气压98 kPa,则该点的压力真空值应为()kPa。
A.90.16
B.7.84
C.78.4
D.9.2