更多"Solar energy is generated as proton"的相关试题:
[单项选择]Solar energy causes
A. less pollution than oil
B. more pollution than oil
C. the same pollution as oil
D. financial problem
[单项选择]Solar energy causes
A) less pollution than oil C) the same pollution as oil
B) more pollution than oil D) financial problem
A. Solar energy causes
B. less pollution than oil
C. more pollution than oil
D. the same pollution as oil
E. financial problem
[单项选择]Which of the following is NOT TRUE of solar energy
A. The technical problem of providing heat on cloudy days are not yet solved.
B. It costs much to have a solar energy system installed at home.
C. There are basically two types of solar energy.
D. Solar energy is clean, inexhaustible and free of risk.
[单项选择]What is the energy source of this so-called solar-sail vehicle
A. Sunlight.
B. Nuclear.
C. Wind.
D. Electricity.
[单项选择]Communication satellites generally use solar cells as their source of electric power, although some test satellites have used thermoelectric generators.
A. superior
B. authorized
C. former
D. experimental
[单项选择]一个工程中含有窗体Form1、Form2和标准模块Modell，如果在Form1中有语句Public X As Integer，在Modell中有语句Public Y As Integer。则以下叙述中正确的是 ______。
A. 变量X、Y的作用域相同
B. Y的作用域是Modell
C. 在Form1中可以直接使用X
D. 在Form2中可以直接使用X和Y
[单项选择]一个工程中含有窗体Form1、Form2和标准模块Model1，如果在Form1中有语句Public X As Integer，在Model1中有语句Public Y As Integer。则以下叙述中正确的是
A. 变量X、Y的作用域相同
B. Y的作用域是Medel1
C. 在Form1中可以直接使用X
D. 在Form2中可以直接使用X和Y
[单项选择]Don't irritate her. she's on a short fuse today.（ ）
A. tease
B. attract
C. annoy
D. protect
[单项选择]要在窗体Form1中定义一个可以在窗体Form2中使用的整型变量X，可在Form1窗体的通用部分输入语句( )。
A. Dim X As Integer
B. Static X As Integer
C. Private X As Integer
D. Public X As Integer
[单项选择]当双击窗体Form1时，要将窗体Form1隐藏起来、将窗体Form2以模式方式显示出来的事
件过程，正确的是
A. Private Sub Form _ Db1Click( )
B. Private Sub Form _ Db1Click( )
C. Private Sub Form _ Click( )
D. Private Sub Form _ Dbl Click( )
