作业帮前门后门都不开猜生肖
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/17 08:49:33
看一下图,应该可以实现你的要求
百度里怎么画呀?用线路并联,干路上放电铃,在两条支路上放灯,一条支路上将前门开关和红灯串联就可以了.
这就是按你的要求,前门有人来是电铃响而灯不亮,后门有人来时不仅灯亮而且铃响.
GoingtoQianmentobuyQianmencigarette,thereisn'tQianmencigaretteinthefrontgate,butthereQianmencigarett
TofrontdoortobuyThefrontdoorThere'snoThefrontdooratfrontdoorButthere'ssomeatthebackdoor前门后门都有指门的含义前门
frontdoorbackdoorrefertotheissueoftheoilpriceseveraltimesspreadataspeedof340meterspersecond
Gofrontdoorforbuyfrontdoor,frontdoorhasnotfrontdoor,backdoorhasbackdoor.或GoingtoQianmentobuyQianmenc
Gofrontdoorforbuyfrontdoor,frontdoorhasnotfrontdoor,backdoorhasbackdoor.
这不是开关能解决的问题,你想一下人来了还要去按一下开关吗?做过电梯吗?为什么人站在门中间门就关不起来呢?用接近开关来就可以解决你的问题了.接近开关带动两个小继电器,小继电器再带动电铃和报警灯.还不明白
如图所示：因为前后门来人电铃都会响，所以电铃在干路中，前后门开关并联，且前门开关控制电灯即串联，按要求画出电路图即可．
左上角：topleftcorner右下角：lowerrightcorner左上方/右下方toplefthandside/lowerrighthandside左前门/右后门leftfrontdoor/R
将到前门买前门GototheFrontDoortobuyfrontdoor.前门没前门ThereisnofrontdoorinFrontDoor.后门有前门ThereisfrontdoorinBack
Gotothefrontdoortobuy"frontdoor".Butthere'sno"frontdoor"atthefrontdoor.There's"frontdoor"atthebackdo
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你应该懂得前门上车,后门下车这个道理吧.
从后门跑到前门的过程就不算一次那样就是后门如果后门到前门算一次那就是前门
Buythefrontdoortofrontdoor,notthefrontentranceofthefrontdoor,thebackdooristhefrontdoor.
TofrontdoortobuyThefrontdoorThere'snoThefrontdooratfrontdoorButthere'ssomeatthebackdoor前门后门都有指门的含义前门
谜面：前门拒狼后门进虎（猜:打成语一）谜底：腹背受敌
Gofrontdoorforbuyfrontdoor,frontdoorhasnotfrontdoor,backdoorhasbackdoor.