FTTH ONU业务放装的主要步骤包括哪些？

判断正误，正确的填 “A”，错误的填 “B”。

     Like many other parents , I worry that my children watch too much television. Why? First, there are

a lot of bad programmes (节目) on TV. They may copy what they see on it. Second, sitting in front of

the TV set all day is bad for their eyes. Many students wear glasses because they watch TV for long

hours. Also, watching TV too much makes children think little. I think it is very important for children to

read some books. Books will make children think more. When I say this to my children, they just do not

answer. They are too busy watching TV to answer me. So, I have decided to sell the television set.

Don't you think it is a good idea?

( )1. From this writing we know many stu dents wear glasses because they watch too much TV.

( )2. Two bad sides are said in the wr iting.                                                                                      

( )3. The writer's children have the same idea with their mother.                                 

( )4. Objectively (客观的) speaking, the writer's view (观点) are right but she holds(持有) the ideas 

            that are too strong. (强烈的)

对于图书管理数据库，分别求出各个单位当前借阅图书的读者人次。下面的SQL语句正确的是
SELECT单位，______ FROM借阅，读者WHERE；
借阅.借书证号=读者.借书证号______

A) COUNT(借阅.借书证号) GROUP BY 单位
B) SUM(借阅.借书证号)
GROUP BY 单位
C) COUNT(借阅.借书证号) ORDER BY单位
D) COUNT(借阅.借书证号) HAVING单位
设有图书管理数据库：
　　图书(总编号C(6)，分类号C(8)，书名C(16)，作者C(6)，出版单位C(20)，单价N(6，2))
　　读者(借书证号C(4)，单位C(8)，姓名C(6)，性别C(2)，职称C(6)，地址C(20))
　　借阅(借书证号C(4)，总编号C(6)，借书日期D(8))．
　　(26)-(30)基于以上图书管理数据库。

脊椎退行性变的MRI表现中，哪项是错误的（）

A.T₁WI上椎间盘呈中低信号，失去正常夹层样结构

B.椎间盘内积气和钙化在T₁WI和T₂WI上均呈低信号或无信号区

C.椎间盘膨出显示为纤维环高信号影向四周均匀膨隆

D.椎体边缘骨质增生或骨赘表现为椎体终板前后缘骨皮质呈三角形外突的长T短T信号

E.黄韧带、后纵韧带的肥厚、钙化均表现为长T₁短T₂信号

一辆从坡路上滑下来的小车，在水平公路上快速运动，为了避免危险，一名战士跑上去推车，想制止小车滑动，但小车仍继续运动．若车受到的摩擦力是280N，战士的水平推力430N，车受到的合力大小是 ______N．

8086CPU的FLAG寄存器中，状态标志和控制标志有何不同？