玉米去雄授粉及人工辅助授粉技术是什么？意义是什么？应注意什么？

清热解毒与疏散风热并用，寓“火郁发之”之义的方剂是（）

A.黄连解毒汤

B.普济消毒饮

C.清瘟败毒饮

D.青蒿鳖甲汤

E.龙胆泻肝汤

下列程序共执行了______次循环。
Private Sub Command1_ Click ()
Dim intsum As Integer
Dim i AS Integer
Dim j As Integer
i = 1
j = 1
do
do
intsum = intsum +
j =j+2
Print j;
Loop until j ＞3
i = i+1
Loop until i＞17
Print
Print intsum
End Sub

A．14

B．15

C．14

D．13

Ravi, like many project (1) , had studied the waterfall model of software development as the primary software life-cycle (2) . He was all set to use it for an upcoming project, his first assignment. However, Ravi found that the waterfall model could not be used because the customer wanted the software delivered in stages, something that implied that the system had to be delivered and built in (3) and not as (4) .

The situation in many other projects is not very different. The real world rarely presents a problem in which a standard process, or the process used in a previous project, is the best choice. To be the most suitable, an existing process must be (5) to the new problem.

A development process, even after tailoring, generally cannot handle change requests. To accommodate change requests without losing control of the project, you must supplement the development process with a requirement change management process.

（2）处填（）。

A．activity

B．procedure

C．process

D．progress

不是按工程建设标准根据内容划分的是( )。

A．设计标准

B．施工及验收标准

C．技术标准

D．建设定额

简述沥青加热基地的选择与布置一般原则。