【单选题】邻二氮菲法测定铁离子时最适宜波长是( )
【单选题】能正确表示"当x 的取值在[1,10]和[200,210]范围内为真,否则为假"的表达式是:
A.
(x>=1) &&(x<=10) &&(x>=200) &&(x<=210)
B.
(x>=1) ||(x<=10) ||(x>=200) ||(x<=210)
C.
(x>=1) &&(x<=10) ||(x>=200) &&(x<=210)
D.
(x>=1) ||(x=200) ||(x<=210)
【单选题】在Excel中,求一组数值中的最大值和平均值函数为 。
【单选题】能正确表示"当x的取值在[1,10]和[200,210]范围内为真,否则为假"的表达式是()
A.
(x>=1) && (x<=10) && (x>=200) && (x<=210)
B.
(x>=1) || (x<=10) || (x>=200) || (x<=210)
C.
(x>=1) && (x<=10) || (x>=200) && (x<=210)
D.
(x>=1) || (x<=10) && (x>=200) || (x<=200)
【单选题】________ is a type of information obtained in a questionnaire that includes name, address, e-mail address and phone number.
B.
Classification information
C.
Problem-solving information
D.
Identification information
E.
Phone book information
【简答题】在EXCEL2010中,求一组数值中的最大值和平均值函数为
【单选题】Why does Kate give her address over the phone?
A.
The driver will deliver her suitcase.
B.
She wants the driver to pick her up.
C.
To see if it matches the address on the suitcase.