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【多选题】
微波提取法的特点
A.
试剂用量少
B.
节能,污染小
C.
加热均匀,且热效率较高
D.
萃取效率高,省时
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举一反三
【单选题】According the two-year-old boy in the interview, what is the reason for the mother wanting her boy to take part in the basketball camp?
A.
His mother is a basketball fan, too.
B.
His mother knows that he is crazy about basketball.
C.
His mother thinks that this can help him grow taller.
D.
His mother expects his to be an excellent basketball player in the future.
【单选题】在对图形进行旋转时,正确的说法是()
A.
角度为正时,将逆时针旋转
B.
角度为负时,将逆时针旋转
C.
角度为正时,将顺时针旋转
D.
旋转方向不受角度正负值影响
【单选题】( 16 )若看到程序中有以下事件过程,则可以肯定的是,当程序运行时 Private Sub Click_MouseDown(Button As Integer,_Shift As Integer,X As Single,Y As Single) Print “ VB Program ” End Sub
A.
)用鼠标左键单击名称为 “ Command1 ” 的命令按钮时,执行此过程
B.
)用鼠标左键单击名称为 “ MouseDown ” 的命令按钮时,执行此过程
C.
)用鼠标左键单击名称为 “ MouseDown ” 的控件时,执行此过程
D.
)用鼠标左键或右键单击名称为 “ Click ” 的控件时,执行此过程
【单选题】若看到程序中有以下事件过程,则可以肯定的是,当程序运行时,_____。
A.
用鼠标左键单击名称为“Command1”的命令按钮时,执行此过程
B.
用鼠标左键单击名称为“MouseDown”的命令按钮时,执行此过程
C.
用鼠标右键单击名称为“MouseDown”的控件时,执行此过程
D.
用鼠标左键或右键单击名称为“Click”的控件时,执行此过程
【简答题】2011年3月,日本强烈地震后,海啸引发福岛第一核电站的放射性物质外泄,有关 l31 I(碘131)的相关报道成为热门话题。请回答下列问题: (1) l31 I原子中含有53个质子,78个中子。 ① l31 I原子的核外电子数为________。 ②自然界中普遍存在另一种稳定的碘原子 l27 I,它和 131 I同属于碘元素。 l27 I原子的质子数为__________ (2)专家指出,服用碘片...
【单选题】According to the twelve-year-old boy in the interview, what is the reason for the mother wanting her boy to take part in the basketball camp?
A.
His mother is a basketball fan, too.
B.
His mother knows that he is crazy about basketball.
C.
His mother thinks that this can help him grow taller.
D.
His mother expects him to be an excellent basketball player in the future.
【单选题】若看到程序中有以下事件过程,则可以肯定的是,当程序运行时( ) Private Sub Click_MouseDown(Button AsInteger,Shift As Integer, x AS single,Y As single) Print “VBProgram” End Sub
A.
用鼠标左键单击名称为Command1的命令按钮,执行此过程
B.
用鼠标左键单击名称为MouseDown的命令按钮,执行此过程
C.
用鼠标左键单击名称为的MouseDown的控件时,执行此过程
D.
用鼠标左键或右键单击名称为Click的控件时,执行此过程
【单选题】某元素的相对原子质量是 31 ,原子核外有三个电子层,最外层有 5 个电子,则该元素原子核中的中子数是 ( )
A.
12
B.
15
C.
16
D.
17
【单选题】若看到程序中有以下事件过程,则可以肯定的是,当以下程序运行时()。 Private Sub Click_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single) Print "VB program" End Sub
A.
用鼠标左键单击名称为“Command1”的命令按钮时,执行此过程
B.
用鼠标左键单击名称为“MouseDown”的命令按钮时,执行此过程
C.
用鼠标右键单击名称为“MouseDown”的命令按钮时,执行此过程
D.
用鼠标左键或右键单击名称为“Click”的控件时,执行此过程
【单选题】Each boy and each girl to serve the people in the future.
A.
want
B.
wants
C.
wanting
D.
to want
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