两台或两台以上不同型号离心泵并联运行。是基于各泵扬程范围比较接近的基础上,否则将找不出具有相等能量的并联工作起点,出现高扬程泵出水、低扬程泵不出水的状态。
参考答案:对
Questions refer to the following graph.
In 1982 the approximate average cost of operating a subcompact car for 10,000 miles was
AVERAGE COSTSOF OPERATING SUBCOMPACT, COMPACT, AND MIDSIZECARS IN THE UNITED STATES, 1982~1986
以对患者合理用药为中心的系统管理称为()
A.处方
B.调剂
C.协定处方
D.临床药学
E.医院药事管理