我国天然气输差暂定不超过()。 ["±2%","±1.5%","±0.5%","±2.1%"]
public class CreditCard { private String cardlD; private Integer limit; public String ownerName; public void setCardlnformation(String cardlD, String ownerName, 28. Integer limit) { this.cardlD = cardlD; this.ownerName = ownerName; this.limit = limit; } } Which is true?() [" The class is fully encapsulated."," The code demonstrates polymorphism."," The ownerName variable breaks encapsulation."," The cardlD and limit variables break polymorphism."," The setCardlnformation method breaks encapsulation."]
预应力混凝土结构的混凝土强度等级不小于()。 ["A.C20 ","B.C30 ","C.C40 ","D.C50"]
电流在单位时间内所做的功称为电功。
下列句子没有语病的是()。 ["巴乔,这位国际足球史上最伟大的球星之一的英雄退役是迟早会发生的事,因为他早就是意甲联赛的主要人物了。","这部反映1998年,我国军民齐心合力战胜百年罕见洪灾的史诗大片,赢得了在场观众的一致感动。","对于美国的信用卡用户而言,当前最关心的问题:在这次大规模失窃事件中,到底泄露了哪些信息?","据中国媒体今天报道,中国卫生部门官员警告人们注意暴饮暴食和吸烟的严重后果,尤其是在春节期间。"]
受精作用