皮皮学，免费搜题
登录
搜题
【单选题】
已知25%氨水的密度为0.91g/cm3,5%氨水的密度为0.98g/cm3,若将上述两种溶液等体积混合,所得氨水溶液的质量分数是()。A.
等于15%
B.
大于15%
C.
小于15%
D.
无法结算
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【多选题】How to compare if two strings are equal? String str1=new String("There is a dog"); Scanner sc=new Scanner(System.in); String str2=sc.nextLine();
A.
if(str1==str2) //do something
B.
if(str1.equals(str2)) //do something
C.
if(str2==str1) //do something
D.
if(str2.equals(str1)) //do something
【单选题】You are integrating a Windows Communication Foundation (WCF) service within an enterprise-wide Service Oriented Architecture (SOA).Your service has the following service contract: [ServiceContract]pub...
A.
Inside the ConfirmCreditCard method, surround the code that must participate in the transaction with a using(new TransactionScope()) block.
B.
Inside the ConfirmCreditCard method, surround the code that must participate in the transaction with a using(new CommittableTransaction()) block.
C.
Add an [OperationBehavior(TransactionScopeRequired=true)] attribute to the ConfirmCreditCard method.
D.
Add an [OperationBehavior(TransactionAutoComplete=true)] attribute to the ConfirmCreditCard method.
【简答题】在Java中,语句String str =“abcdefg”;str = str.substring(1,3);执行后str中的值为______。If there were statements are String str =“abcdefg”;str = str.substring(1,3);the result of str after running will be ______.
【单选题】硅酸盐水泥初凝时间不小于 45min ,终凝时间不大于( ),普通硅酸盐水泥初 凝不小于 45min ,终凝不大于( )。
A.
360min ， 500min
B.
390min ， 500min
C.
360min ， 600min
D.
390min ， 600min
【简答题】在一棵非空二叉树中，若度为0的结点的个数n，度为2的结点个数为m，则有n=________ (系统根据字符串匹配来判定答案，所以您的答案中请不要包含空格)For a binary tree with at least one node, if there are n nodes with degree 0 and m nodes with degree 2, then n = ________（T...
【简答题】复合硅酸盐水泥初凝时间不小于45min，终凝时间不大于600min。
【简答题】读以下程序说明和c程序填空 程序说明:
输入一行字符,统计其中有多少个单词,单词之间用空格分开 程序: #include void main() { char string[81]; int I, num=0,word=0; _______(1)__________; gets(string); for(i=0;c=string[i])!='\0';i++)//直到字符串的末尾 { if(str...
【简答题】For a binary tree with at least one node, if there are n nodes with degree 0 and m nodes with degree 2, then n = ________ ( This problem is judged by string matching, Please make sure your answer don'...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
