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多选题
Given an EL function foo， in namespace func， that requires a long as a parameter and returns a Map，which two are valid invocations of function foo？（）
A
${func（1）}
B
${foo：func（4）}
C
${func：foo（2）}
D
${foo（5）：func}
E
${func：foo（easy）}
F
${func：foo（3）.name}
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Given an EL function foo， in namespace func， that requires a long as a parameter and returns a Map，which two are valid invocations of function foo？（）A、${func（1）}B、${foo：func（4）}C、${func：foo（2）}D、${foo（5）：func}E、${func：foo（"easy"）}F、${func：foo（"3"）.name}
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Given an EL function declared with：11. 12.spin 13.com.example.Spinner 14. 15.java.lang.String spinIt（） 16. 17. Which two are true？（）A、The function method must have the signature： public String spin（）.B、The method must be mapped to the logical name "spin" in the web.xml file.C、The function method must have the signature： public String spinIt（）.D、The function method must have the signature public static String spin（）.E、The function method must have the signature： public static String spinIt（）.F、The function class must be named Spinner， and must be in the package com.example.
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单选题A developer wants too use EL to invoke a function using S{my：bloof（“foof”）}. Which is always true？（）A
The method invoked by this function must be statie.B
The function class must implement the Function interface.C
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The function class must have a method with the signature：Void bloof （java.lang.Strings）
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多选题Which the three are valid declarations of a float？（）Afloat foo = -1；Bfloat foo = 1.0；Cfloat foo = 42el：Dfloat foo = 2.02f：Efloat foo = 3.03d：
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单选题Given an EL function foo， in namespace func， that requires a long as a parameter and returns a Map， which two are valid invocations of function foo？（）A
${func（1）}B
${foo：func（4）}C
${func：foo（2）}D
${foo（5）：func}E
${func：foo（“easy”）}F
${func：foo（“3”）.name}
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在Oracle 中，下列语句中哪些可以合法地创建一个函数？ (1.0分) [多选]
A. CREATE FUNCTION func_name(cdcode NUMBER) RETURN CHAR IS DECLARE dis_cd CHAR(15);
BEGIN .. END; B. CREATE FUNCTION func_name(cdcode NUMBER) RETURN CHAR IS dis_cd CHAR(15);
BEGIN .. END; C. CREATE FUNCTION func_name(cdcode NUMBER) IS
BEGIN .. END; D. CREATE FUNCTION func_name(cdcode NUMBER) RETURN CHAR IS
BEGIN .. END; E. CREATE FUNCTION func_name(cdcode NUMBER) RETURN CHAR IS DECLARE dis_cd STRING (15);
BEGIN .. END;
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