关于拆装盲板作业的表述，下列说法正确的是（）。A、拆盲板时要快速拧开螺丝，排净内部残

工程项目前期工作计划的编制是在()进行的。

A.项目预测的基础上

B.编制项目设计任务书的同时

C.项目的可行性研究被批准后

D.项目的初步设计被批准后

This afternoon I was having a PE lesson while I fell down and hurt my foot. I was in greatly pain at that moment, but I tried to act as if nothing has happened until the class was over. Though I had difficulty walk back to my classroom, I still didn’t tell anyone but even refused the offer of help of my classmates. As result, the hurt in my foot became bad. Now I know I am wrong. We can tell others our need for help and accept his help. Some day we can help others in return for. In this way, we can get along to each other happily and peacefully.

企业自有资金的筹集包括（）

A.吸收直接投资

B.发行股票

C.银行借款

D.商业信用

张义山与于华系一起长大的近邻。二人本都生活于穷困潦倒之中，但突然有一天，张义山发现于华已今非昔比，便向其请教致富秘诀。于华坦言自己正从事贩毒活动，并进而向张义山鼓吹了一通"马无夜草不肥"之类的思想。于是张义山决意亦从事贩毒活动，遂从于华手中低价购得50克纯度为60%的海洛因。为了增加数量多卖钱，张义山灵机一动又在海洛因中掺入50克西药"头痛粉"，并转手以每克120元的价格转卖给他人，获利近万元。其后，张义山索性以"头痛粉"冒充海洛因，并邀请不知情的李某帮助贩卖。当二犯携带250克假毒品准备贩卖时，被公安机关当场抓获。经查李某并不知道假毒品一事。李某的行为构成：

A．贩卖毒品罪(未遂)

B．贩卖毒品罪

C．诈骗罪

D．诈骗罪(未遂)