中低压齿轮泵对压力脉动要求较严,一般限制在()Mpa以下。
参考答案:0.1
In the name list, two names _____in particular: James and Susan, who are both top students in our school. [ ]
A. call up
B. stand for
C. call out
D. stand out
机械加工车间的设备基础费率在我国的取费标准一般是( )。
A.1.4%~3.4% B.1.5%~2.5%C.1.5%~4.5%D.2.5%~6.5%