车辆电路系统保养工艺要求，检查各部线尾的技术标准是各部线尾齐全、紧固，无露铜线现象。

请从下列方框中横向搜寻出四个有关颜色,三个有关水果,三个有关数字的单词,并填入相应的横线上。

颜色 1                 2                3                4          

水果 5                 6                7               

数字 8                 9                10               

MgCl₂•xH₂O的晶体2.03g与足量的硝酸银溶液反应，生成沉淀0.02mol，则MgCl₂•xH₂O晶体中x的数值是

（　　）

A．2

B．4

C．6

D．8

－Dirty water shouldn’t be poured into rivers.

－_______. It will cause pollution.

A．Don’t say like this

B．Never mind

C．I agree with you

D．The same to you

正常颈部血管多普勒超声表现不正确的是

A.颈动脉血流呈湍流样充盈 

B.颈动脉血流为中央明亮、外周暗淡样色彩 

C.颈内、外动脉分叉膨大处见少许紊乱的彩色血流 

D.椎动脉呈单一色彩显示 

E.椎动脉血流为层流

What is not a reason for companies to organize lessons learned ？（）

A．Lessons learned databases are an essential element of the organizational process asset

B．Lessons learned should focus on identifying those accountable for errors and failure

C．Lessons learned sessions should bring about recommendations to improve future performance on project

D．Phase-end lessons learned sessions provide a good team building exercise for project staff member