绝缘油含气量检测(真空压差法)中,U形油柱压差计法应进行平行试验,()次试验结果应满足精密度要求。
A.2
B.3
C.4
D.5
参考答案:A
—Only one of these books is worth _______.
—_______ is no wonder that you look so upset.
A.to read; That
B.of reading; This
C.being read; There
D.reading; It
费托合成反应器底部气体分布器上设有4组内径80mm的处理气体分布器堵塞的泄放管。