47号元素Ag的基态价层电子结构为,它在周期表中的位置是()。
A.ds区
B.s区
C.d区
D.p区
参考答案:A
小题1:If you find Grace’s dictionary, you can call .
A.9873-8769
B.668-0796
C.233-4105
D.15968720230小题2:From the family tree we can see John is Jim and Helen’s
A.daughter
B.son
C.brother
D.cousin小题3:Lily needs of Celion Dion.
A.three pencils
B.a red jacket
C.new CDs
D.2 sharpeners小题4:Bill Smith is a in No. 9 Middle School.
A.student
B.teacher
C.worker
D.singer小题5:What’s Tom Cooper’s address?
A.Tom.C@yahoo.cn
B.Bill999@sina.com
C.312 Lin He Road
D.321 Yongfu Road
[背景材料]续上题。该工程项目施工分土建、设备安装、装饰装修三部分。业主对工程发包提出了两种方案:一种是采用平行发包模式,即土建、设备安装、装饰装修分别发包;另一种是采用总分包模式,即由土建施工单位总承包,设备安装、装饰装修列人总承包范围再分包。