锅炉再热器系统的水压试验是采用电动给水泵(),经再热器()管道,向再热器系统充水。
参考答案:中间抽头;事故喷水
Such signs _____ we use in the experiment ______ Greek letters. [ ]
A. as, are
B. as, is
C. that, are
D. that, is
脑血栓形成和脑栓塞属于()
A.缺血性脑卒中
B.出血性脑卒中
C.脑卒中一级预防
D.脑卒中二级预防
E.短暂性脑缺血发作(TIA.