下列哪种情形,可以当场作出治安管理处罚决定()。 ["违反治安管理行为事实清楚,证据确凿,处警告处罚的","违反治安管理行为人对五百元罚款的处罚无异议的","违反治安管理行为事实清楚,证据确凿,处一百元罚款的","违反治安管理行为事实清楚,证据确凿,处四百元罚款的"]
What is the result?() ["420 is the output.","An exception is thrown at runtime.","All constructors must be declared public.","Constructors CANNOT use the private modifier.","Constructors CANNOT use the protected modifier."]
简述原核微生物基因重组的主要方式及其特点?
恐怖症
下列宿根花卉中()的别称也叫忘忧草。 ["菊花","萱草","麦冬","君子兰"]
论述阻火器的作用及原理。