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【判断题】
负反馈只能改变反馈环路内的放大性能,而对环外的性能不会有影响。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】我市某中学要印制本校高中招生的录取通知书，有两个印刷厂前来联系制作业务，甲厂的优惠条件是：按每份定价1.5元的八折收费，另收900元制版费；乙厂的优惠条件是：每份定价1.5元的价格不变，而制版费900元则六折优惠．且甲乙两厂都规定：一次印刷数量至少是500份． （1）分别求两个印刷厂收费y（元）与印刷数量x（份）的函数关系，并指出自变量x的取值范围． （2）如何根据印刷的数量选择比较合算的方案？如...
【多选题】You are configuring the PROD database to use an internal tuning algorithm to monitor the performance of the workload. To achieve this configuration， you specify the following parameter settings in the...
A.
Modifying the SHARED_POOL_SIZE initialization parameter cannot be accomplished if the SGA_TARGET initialization parameter is set to a non-zero value.
B.
Modifying the value of the SHARED_POOL_SIZE initialization parameter to zero is not allowed if the SGA_TARGET initialization parameter is set to a nonzero value.
C.
Increasing the value of the SHARED_POOL_SIZE initialization parameter does not increase the shared pool component size. It sets the lower limit for the size of this component.
D.
Decreasing the value of the SHARED_POOL_SIZE initialization parameter does not reduce the size of the shared pool component immediately. It sets the lower limit for the size of this component.
E.
Increasing the value of the SHARED_POOL_SIZE initialization parameter immediately increases the shared pool component to the desired size by reallocating the additional memory from the auto-tuned memory components.
F.
Decreasing the value of the SHARED_POOL_SIZE initialization parameter immediately shrinks the shared pool component to the desired size while reallocating the released memory to the memory components that are not auto-tuned.
【单选题】下列代码编译后不会出现警告或错误的是( )。
A.
char c = 'a';
B.
byte b = 255;
C.
float c = 10.0;
D.
double d = 1.0f;
【简答题】JSP的页面组成有哪些？
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