【简答题】下列计算正确的是( ) A. 3 - 3 =0 B. 3 + 3 = 3 C. 3 × 3 = 6 D. 3 ÷ 3 =3
【简答题】证明:(x+y+z) 3 xyz-(yz+zx+xy) 3 =xyz(x 3 +y 3 +z 3 )-(y 3 z 3 +z 3 x 3 +x 3 y 3 ).
【简答题】(x 3 -2y 3 -3x 2 y)-(3x 3 -3y 3 -7x 2 y)
【单选题】NCl 3 和 PCl 3 的水解产物分别是 NCl 3 PCl 3
A.
NH 3 和 HCl ; PH 3 和 HOCl
B.
HNO 3 和 HCl ; H 3 PO 3 和 HCl
C.
HNO 3 和 HCl ; PH 3 和 HOCl
D.
NH 3 和 HOCl ; H 3 PO 3 和 HCl
【简答题】表单标记的语法格式格式为: 表单元素... 表单属性: name属性 :表单的名字,在一个网页中用于惟一识别一个表单 action属性 :表单处理的方式,其值往往是网址。action 属性定义在提交表单时执行的动作。向服务器提交表单的通常做法是使用提交按钮。通常,表单会被提交到 web 服务器上的网页。 method属性:规定在提交表单时所用的 HTTP 方法_______________或 ...
【单选题】For candidates with a career salary history, which one is not the proper way to respond to the salary questions?
A.
Don’t confine yourself to a sp ecific figure, and state a range.
B.
Show that you are very devoted to your work and you express clearly what you want.
C.
Show your limitation and weakness in the field.
D.
Link any ref erence to an increase on your previous salary for increased job responsib ilities and demands.
【单选题】If $1102.50 is the amount payable in two years for a $1000 simple loan made today, the interest rate is
【简答题】(-1 ) 3 ?(3 a 3 b 2 ) 3 ?(- 2 3 a 2 b 3 ) 3 .
【单选题】For candidates with no real salary history, he can respond to salary question except ______.
A.
suggesting a range to the employer
B.
asking for a high-level salary as you like
C.
doing your homework before the interview and make some notes
D.
making sure the suggested range is based on good research which is current and industry-related