业务核算登记簿的（），遵循事权划分原则。 ["记载","使用","保管","作废"]
As time goes on the organic material is buried deeper and hence（）higher temperatures and pressures. ["is made up of","is absorbed in","is exposed to","is known a"]
行政行为以其启动是否需要行政相对人先行申请为标准分为（） ["抽象行政行为与具体行政行为","揭束行政行为与自由裁量行政行为","依职权行政行为与应请求行政行为","要式行政行为与不要式行政行为"]
儿童票可享受（）的优惠。 ["客票","附加票","加快票","空调票"]
暗管是指通过隐蔽的方式达到规避监管目的而设置的排污管道，包括埋入地下的（） ["水泥管","瓷管","塑料管","以上全选"]
CRH2A型动车组制动控制器的制动指令分为哪几类？在哪些情况下自动实施紧急制动？
