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(3) Power on the control coil to detect the contacts. Apply rated voltage to the control coil of the time relay, and then detect whether the contact state changes according to the type of the time relay. For example, for the energized time delay type time relay, after the energized time delay, whether the delayed open contact is closed (the resistance is close to 0) and whether the delayed closed contact is opened (the resistance is infinite).It is very important for the selection of plants. Some plants have good stability and high color fastness, such as Dioscorea cirrhosa, persimmon, betel nut, turmeric, etc. Personal experience is that the stability of gardenia is not so good, and the color is easy to fade when washed too much. For reference only. In dyeing, try to choose some plants with good stability to dye, or carry out re-dyeing, which can stabilize the color fastness. For example, we use onion skin to cover with blue dye, and persimmons have higher color fastness after covering with blue dye, and basically will not fade. Of course, according to their own needs of color and luster, other cover dyeing can also be tried.他上前一把拿回手机，免得施薇再念出什么更难听的评论。究竟不懂恋爱的小光，会不会和荠恋爱，并成为吸血鬼呢！？李副将瞪大了眼睛，有些难以置信，这时候出山林不是找死吗？这个消息必须马上报告给安桐，希望能换得一线生机。尹旭端起一杯水酒，洒进滔滔不绝的江水之中，这一杯是祭奠那些沉船时遇难的船工和随从。