题目内容

保护核酸不被核酸酶破坏的是（）

A. 核酸
B. 衣壳
C. 包膜
D. 壳粒
E. 刺突

查看答案

搜索结果不匹配？点我反馈

更多问题

影响鱼类性腺发育综合因素包括哪些？

查看答案

某女，28岁，因肠梗阻反复呕吐，并自觉口渴、乏力、厌食、头晕。查血清钠在正常范围，皮肤弹性减退，尿少且比重升高，考虑为等渗性脱水，脱水程度为中度。该患者的失水量为体重的（）

A. 2％一4%
B. 4％一6%
C. 6％一8%
D. 大于8%
E. 小于2%

查看答案

Your company uses SQL Server 2005. You are implementing a series of views that are used in ad hoc queries. The views are used to enforce your companys security policy of abstracting data. Some of these views perform slowly. You create indexes on those views to increase performance, while still maintaining the companys security policy. One of the views returns the current date as one of the columns. The view returns the current date by using the GETDATE() function. This view does not allow you to create an index. You need to create an index on the view. Which two actions should you perform?（）

A. Remove all deterministic function calls from within the view.
B. Remove all nondeterministic function calls from within the view.
C. Schema-bind all functions that are called from within the view.
D. Create the view and specify the WITH CHECK OPTION clause.

查看答案

采取气体试样时，应该注意哪些问题？

查看答案

保护核酸不被核酸酶破坏的是（）

A. 核酸 B. 衣壳 C. 包膜 D. 壳粒 E. 刺突

影响鱼类性腺发育综合因素包括哪些？

某女，28岁，因肠梗阻反复呕吐，并自觉口渴、乏力、厌食、头晕。查血清钠在正常范围，皮肤弹性减退，尿少且比重升高，考虑为等渗性脱水，脱水程度为中度。该患者的失水量为体重的（）

采取气体试样时，应该注意哪些问题？

A. 核酸
B. 衣壳
C. 包膜
D. 壳粒
E. 刺突