购买纸巾时，颜色越白的纸巾质量越好。()
购买纸巾时，颜色越白的纸巾质量越好。()
相关考题：
选择人工牙时遵循的原则是（ ）A、大小可以参照口腔内余牙，颜色越白越好B、唇面弧度应为直线形C、形态越标准越好D、颜色、形态、大小根据口内余牙及患者面形、肤色、年龄而定E、选择硬度最大，耐磨耗的瓷牙
选择人工牙时遵循的原则是( ) A、大小可以参照口腔内余牙，颜色越白越好B、唇面弧度应为直线形C、形态越标准越好D、颜色、形态、大小根据口内余牙及患者面形、肤色、年龄而定E、选择硬度最大，耐磨耗的瓷牙
试题六（共15分）阅读下列说明和Java代码，将应填入(n)处的字句写在答题纸的对应栏内。【说明】某大型商场内安装了多个简易的纸巾售卖机，自动出售2元钱一包的纸巾，且每次仅售出一包纸巾。纸巾售卖机的状态图如图6-1所示。采用状态( State)模式来实现该纸巾售卖机，得到如图6-2所示的类图。其中类State为抽象类，定义了投币、退币、出纸巾等方法接口。类SoldState、SoldOutState、NoQuarterState和HasQuarterState分别对应图6-1中纸巾售卖机的4种状态：售出纸巾、纸巾售完、没有投币、有2元钱。【Java代码】import j ava.util.*;interface State{public void insertQuarter(); //投币public void ejectQuarter(); //退币public void turnCrank();腑安下“出纸巾”按钮public void dispense(); //出纸巾}class TissueMachine {( 1 ) soldOutState, noQuarterState, hasQuarterState, soldState, state;state = soldOutState;int count = 0; //纸巾数public TissueMachine(intnumbers) { /*实现代码省略 */}public StategetHasQuarterState() { returnhasQuarterState; }public StategetNoQuarterState() { returnnoQuarterState, }public State getSoldState() { return soldState; }public State getSoldOutState() { return soldOutState; }public int getCount() { return count, }//其余代码省略}class NoQuarterState implements State {TissueMachine tissueMachine;public void insertQuarter() {tissueMachine.setState( (2));}//构造方法以及其余代码省略}class HasQuarterState implements State {TissueMachine tissueMachine;public void ejectQuarter() {tissueMachine.setState ((3));}//构造方法以及其余代码省略}class SoldState implements State {TissueMachine tissueMachine;public void dispense() {if(tissueMachine.getCount() 0) {tissueMachine.setState ((4));} else {tissueMachine.setState ((5)); }}}
包卷成型时，应事先用纸巾吸干大虾表面水分。