下列粒子的结构表示正确的是[ ] A.18O的结构示意图: B. O2-的结构示

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问题:

下列粒子的结构表示正确的是 [ ]

A. 18O的结构示意图:      

B. O2-的结构示意图: 

C. Mg2+的最外层有10个电子       

D. Mg2+的结构示意图: 

考点:原子结构示意图原子核外电子的排布离子结构示意图
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试述班主任建设和管理班级组织的策略。

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Lim provides printing services under the business name of AC Printing Services (AC). Lim had rented a unit from JTC Corporation (JTC) a year ago. The tenancy agreement included clause 21, which required the landlord ‘in every way to keep the building in good repair’.On 23 March 2011, large chunks of concrete broke off from the ceiling in the unit occupied by AC. Although no-one from AC was hurt in the incident, the chunks of concrete landed on two of AC’s printing machines and severely damaged the machines. Also, as the entire building had to be shut down for inspection by structural engineers, AC had to close for two weeks, resulting in numerous cancellations of their existing services as well as a loss of new deals. To make matters worse, AC was very close to signing a lucrative contract worth $30,000 with a well-known advertising agency which it then lost to a rival firm. Lim is extremely upset and wants to sue JTC.Required:Assuming JTC has breached the tenancy agreement, advise Lim as to:

(b) the losses that he may recover from JTC. (4 marks)

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《统计法》规定,国家建立集中统一的统计系统,实行统一领导、统一负责的统计管理体制。 ( )

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下列经济业务中,不会引起所有者权益总额变动的是( )。

A.所有者投入货币资金
B.所有者向企业投入设备
C.企业向所有者分配利润
D.企业提取盈余公积

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S/Key协议属于( )的内容。

A.个人持证

B.口令机制

C.数字签名

D.笔迹识别

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