In order to correctly open a new coil of manila line,you should().
A. pull the tagged end from the top of the coil
B. pull the tagged end through the eye of the coil
C. secure the outside end unroll the coil
D. unreel the coil from a spool
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焦料铺设前,焦粒粒度混合比例为()(40%)、2-4mm(60%),配比后的焦粒用袋子装好、供通电焙烧装炉使用。
电解槽启动过程中,槽电压处于3.5V时为事多发地段,采用的方法(),如果液体电解质较多,可采取猛抬电压的办法。