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问题 单项选择题

年轻恒牙牙根完全形成在萌出后多长时间

A．1～1年半

B．2～2年半

C．3～5年

D．6年

E．7年

答案

参考答案：C

解析：年轻恒牙牙根完全形成在萌出后3～5年。乳牙牙根形成在萌出后1～1年半，

单项选择题

会计报表系统中，无论是一次性定义一张完整的空表格式，还是分表头、表体、表尾三部分定义，最好采用( )。

A．行编辑

B．列编辑

C．全屏幕编辑

D．固定填列
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单项选择题 共用题干题

WLANs are increasingly popular because they enable cost-effective connections among people, applications and data that were not possible, or not cost-effective, in the past. For example, WLAN-based applications can enable fine-grained management of supply and distribution (1) to improve their efficienty and reduce (2) .WLANs can also enable entirely new business processes. To cite but one example, hospitals are using WLAN-enabled point-of-care applications to reduce errors and improve overall (3) care. WLAN management solutions provide a variety of other benefits that can be substantial but difficult to measure. For example, they can protect corporate data by preventing (4) through rogue access points. They help control salary costs, by allowing IT staffs to manage larger networks without adding staff. And they can improve overall network mananement by integrating with customers' existing systems, such as OpenView and UniCenter. Fortunately, it isn't necessary to measure these benefits to justify investing in WLAN management solutions, which can quickly pay for themselves simply by minimizing time-consuming(5) and administrative chores.

空白处（2）应选择（）

A.personel

B.expenses

C.overhead

D.hardware
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