【单选题】下列有关制取蒸馏水的装置和操作的说法中,不正确的是( )
【单选题】关于蒸馏操作,下列说法正确的是
B.
温度计的水银球应放在蒸馏烧瓶支管处,不能插入液面
【单选题】You can of your new neighbors where the post office is.
【单选题】查询学号为 “ 201215121 ”和学号为“ 201215122 ”的两个学生中任一学生选修过的课程的课程号,可以使用的 SQL 语句是:( )
A.
SELECT Cno FROM SC WHERE Sno NOT IN ('201215121', '201215122');
B.
SELECT Cno FROM SC WHERE Sno = '201215121' OR Sno = '201215122';
C.
SELECT Cno FROM SC WHERE Sno = '201215121' AND Sno = '201215122';
D.
SELECT Cno FROM SC WHERE Sno != '201215121' OR Sno != '201215122';
【单选题】Where can you post your questions?
【单选题】有如下程序: #include<iostream.h> using namespace std; class Demo { public: Demo(){ cout<<'default constructor/n'} Demo(const Demo &X){ cont<<'copy constructor/n'} }; Demo userCode (Demo b){Demo c(b)return ...
【单选题】Danny doesn't like bright green, ______? [ ]
【简答题】下列程序运行结果是( )public class Demo {public static void main(String[] args) {Demo demo = new Demo();demo.show(new Car() {public void run() {System.out.println("demo run");}}); }public void show(Car c) {c.r...