若方程1-2x6+x+13=1-2x+14与关于x的方程x+6x-a3=a6-3

题型:解答题

问题:

若方程
1-2x
6
+
x+1
3
=1-
2x+1
4
与关于x的方程x+
6x-a
3
=
a
6
-3x
的解相同,求a的值.
考点:一元一次方程的解法
题型:解答题

Research studies show that there are some fundamental (1) between men and women in their attitudes to (2) matters. Women are far more likely to save for their children’s (3) and to save up to buy a (4) . Men tend to save for a (5) , and for their (6) . But in fact the need for women to save for their old age is far (7) than for men. Throughout the world, women are likely to live many years (8) than men. Furthermore it is the (9) women who will most often have to look after the children and thus they need more (10) to look after not just themselves but others. Women today need to look ahead, think ahead, not wait until they’re under (11) .
A number of (12) have been set up to help them do this. Some educational institutions offer night (13) in Money (14) . They can be given (15) on different ways of saving. It is usually advised that at least (16) of a person’s savings should be in low-risk investments but for the rest, (17) advisors often advise taking some (18) risks. Initiatives such as this can give women the economic (19) and knowledge they need for a comfortable, (20) retirement.

题型:解答题

期权的时间价值与期权合约的有效期( )。

A.成正比

B.成反比

C.成导数关系

D.没有关系

题型:解答题

NJ07型列车当ATO灯亮时,按压ATO按钮保持()秒以上。

A.3

B.4

C.5

D.6

题型:解答题

下述关于电—液调速器的工作特点叙述中正确的是()。

A.信号监测采用电子式,执行机构采用液压式

B.信号监测采用液压式,执行机构采用电子式

C.信号监测采用液压离心式,执行机构采用电子式

D.信号监测采用轴带发电机装置,执行机构采用电磁液压式

题型:解答题

项目范围变化是孤立存在的吗?

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