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【简答题】
如图所示正弦稳态电路中，已知R 1 =R 2 =1Ω，i s =10 cos tA，功率表读数为P W =50W，三个电压表读数U V 1 =U V 2 =U V 0 。试求C 0 、C及L的值(设电压表内阻对电路无影响)。
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举一反三
【单选题】The system analysts have requested heavy use of object features. The database design makes use of PL/SQL8 object types, methods, and LOB types. How do you work with these features on the client?（）
A.
Write client-side subprograms containing the PL/SQL8 constructs, and move them into an object group.
B.
Write server-side subprograms, and call the subprograms from the form application.
C.
Store the PL/SQL8 constructs in a PL/SQL library, and attack the library to each form muddle in your application.
【简答题】进行工程质量事故处理的主要依据中的相关建设法规是具有（ ）的依据。
【单选题】You observe that in your PROD database， customer information is being modified by some unauthorized users. You want to keep track of all of the transactions happening on the table using PL/SQL. Which ...
A.
functions
B.
packages
C.
procedures
D.
database triggers
E.
anonymous PL/SQL block
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