鼠标单击开关切换开合状态
https://cc.xiaogd.net/?startCircuitLink=https://book.xiaogd.net/code-hlchs-examples/assets/circuit/code-hlchs-ch05-01-communication-circuit.txt
https://cc.xiaogd.net/?startCircuitLink=https://book.xiaogd.net/code-hlchs-examples/assets/circuit/code-hlchs-ch05-02-bidirectional-telegraph-system.txt
https://cc.xiaogd.net/?startCircuitLink=https://book.xiaogd.net/code-hlchs-examples/assets/circuit/code-hlchs-ch05-03-common-negative-bidirectional-telegraph-system.txt
https://cc.xiaogd.net/?startCircuitLink=https://book.xiaogd.net/code-hlchs-examples/assets/circuit/code-hlchs-ch05-04-circuit-with-ground.txt
https://cc.xiaogd.net/?startCircuitLink=https://book.xiaogd.net/code-hlchs-examples/assets/circuit/code-hlchs-ch05-05-circuit-with-one-terminal-voltage.txt
https://cc.xiaogd.net/?startCircuitLink=https://book.xiaogd.net/code-hlchs-examples/assets/circuit/code-hlchs-ch05-06-mutual-circuit-with-one-terminal-voltage.txt
