妈妈带了200元去超市,一共花了x元,商店找回74元.
设一共花了x元,
200-x=74,
x=126;
答:一共花了126元.
The Customs surveillance zone include following places except ______.
A.Any seaport, railway and high way station, airport, border pass or international postal matter exchange where there is a Customs establishmentB.any place where Customs control is conductedC.any place without a Customs establishment but which has been approved by the state council as a point of entry and exitD.any place along the border of the country
Java语言有自动收集垃圾的功能,会周期性地回收一些长期不用的对象占用的内存。下列选项中为对象清除路径的是( )。 Ⅰ.依靠Java的垃圾回收机制回收内存 Ⅱ.调用System.gc(),请求垃圾回收 Ⅲ.Java系统开始运行时,自动调用java.Object.finalize()释放内存 Ⅳ.在程序中调用重写的finalize()方法释放系统资源,其格式为: protected void finalize() throws throwable … super, finalize ();
A) Ⅰ, Ⅲ B) Ⅰ, Ⅱ. Ⅲ, ⅣC) Ⅰ. Ⅱ, Ⅲ D) Ⅱ, Ⅲ. Ⅳ