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7. Important: business dropping at the beginning of a month and at the end of a month is the default for closing, resulting in business dropping during this period without basis.黄豆见三篮子都是小粽子，又见案板上有一大盆大个头的粽子，便指着道：把这大粽子另外装些，我好送去给我师傅。九江国已经面临这样一个境地，危机重重。Time relays are divided into two types: on-time delay type and off-time delay type, and their symbols are shown in the following figure. For the power-on delay type time relay, when the coil is powered on, the power-on delay type contact acts after the delay time (the normally closed contact is opened and the normally open contact is closed), and the contact immediately returns to normal after the coil is powered off; For the power-off delay type time relay, when the coil is powered on, the power-off delay type contact acts immediately (the normally closed contact is opened and the normally open contact is closed). After the coil is powered off, the contact will not return to normal until the delay time is passed.