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3. Candidates can only answer questions after the test bell rings. Candidates are not allowed to enter the examination room after blowing the boundary whistle 15 minutes after the examination. You can leave the examination room within 30 minutes before the final examination.(1) Normal detection of contacts. The normal detection of contacts refers to the detection of contacts when the control coil is not energized. The normally open contacts are open with infinite resistance, and the normally closed contacts are closed with resistance close to 0. The normal detection of the normally open contacts of the time relay is shown in the following figure.　　影片根据纽约记者苏珊娜·卡霍伦个人传记改编，讲述她自己从医院醒来后失去了所有记忆，时而出现各种幻觉，时而爆发癫痫，在一位医生的帮助下，她鼓起生活的勇气，开始寻找失去的记忆……ImageBehavioral patterns include 11 patterns: template method pattern, command pattern, iterator pattern, observer pattern, intermediary pattern, state pattern, policy pattern, responsibility chain pattern, visitor pattern, interpreter pattern and memo pattern.翘儿只老老实实吃饭，杨长帆交代过，嘱咐她别多说话，赵思萍嚷嚷让她嚷嚷去。