μ and [img=18x22]17de81fccbbd283.png[/img] are the two parameters for a normal distribution. In which situation the curve of probability density function of a normal distribution will become narrow? A: When μ becomes larger. B: When μ becomes smaller. C: When σ becomes larger. D: When σ becomes smaller. E: When μ and σ both become larger.

What does "operating with normal business procedures" refer to A: Adopting the western way of doing business. B: Ordinary way of doing business without meditation and fasting. C: Contacting with God. D: Putting right persons in the right jobs.

Questions 14～16 are based on a text about ice phrases. You now have 15 seconds to read Questions 14～16. What is the meaning of "Skating on thin ice" A: One may be doing something quite difficult. B: One may be doing something quite risky. C: One may be doing something quite annoying. D: One may be doing something impossible.

下面哪个代码片段是错误的? A: package mypackage;public class Rectangle{//doing something…} B: import java.io.*;package mypackage;public class Rectangle{//doing something…} C: import java.io.*;class Circle{//doing something…}public class Rectangle{//doing something…} D: import java.io.*;import java.awt.*;public class Rectangle{//doing something…}

Choose the sentence(s) with the wrong position of pause:? Mack //what are you doing|What are you doing // Mack|Mack what are you doing|What are you doing Mack