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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.听说这时候山上木耳蘑菇长得最好了，兔子也多，张小兄弟家里该忙了吧？曾鹏关心地问道。赵文华这便摸着钱袋要点出来。小艇已经驶回大船底下，开始下绳往上吊。讲述会计师出身的一个男人在一个普通公司上班升职为金科长，讲述站在弱者这边，刻画为了人类而守护原则和常识的故事，是一部办公室喜剧。李胜男面对男友的求婚,一夜之间带着闺蜜不知所踪,至此3女与6男的追逐游戏感情。森林泰山（George of the Jungle）是迪士尼1997 年推出的卖座喜剧电影，票房上飚出漂亮的成绩，更捧红了担任本片男主角的 Brendan Fraser。本片故事叙述一位从小被猩猩所养大的 George 意外救了来到野外的美女 Ursula，两人因此谱出恋情，但是 Ursula 却有一位不死心的未婚夫，趁著 George 与 Ursula 远赴旧金山，偕同几个盗猎者要抓那只会说话的猩猩去卖钱，George 接到鸟儿的通知，于是火速展开救援，阻止了坏人的阴谋。