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土壤元素背景值 background value of soil element
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单选题How can a developer ensure that a fault will occur if the service does not recognize a SOAP header entry containing a transaction number？（）A
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多选题What is true about a background engine? （）(Choose two.)AIt is a server-side PL/SQL procedure.BWhen executing a PL/SQL function activity, it will automatically ping (cache) the PL/SQL code.CIt executes deferred activities in decreasing order of their Cost property value (activities with higher cost value are processed first).DIt would fail if another background engine process is started to handle the same type of activities within the same item type.EDuring its single invocation, it processes activities that were stuck, deferred or timed out when the background engine was started.
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单选题You are maintaining an OLTP database in Oracle10g. You find that the database is generating a large number of trace files. You decide to disable the trace files generated by the ARCn background process. Which action will enable you to disable the trace files generated by the ARCn background process？（）A
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单选题The control mode where the position of the final control element has a linear relationship with the position or value of the controller, variable is known as（）A
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多选题A custom JSP tag must be able to support an arbitrary number of attributes whose names are unknown when the tag class is designed. Which two are true？ （）AA element in the echo tag LTD must have the value JSPBThe echo tag handler must define the setAttribute （String key， String value） methodCThe true element must appear in the echo tag TLDDThe class implementing the echo tag handler must implement the javax.sevlet.jsp.tagext.IterationTag interfaceEThe class implementing the echo tag handler must implement the javax.sevlet.jsp.tagext.DynamicAttributes interface
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多选题Under what two circumstances is the set JspBody method NOT called in a tag class that implements the Simple Tag interface？ （）AThe tag is invoked without a body.BThe doTAb method throws an exception.CThe element has the value empty.DThe tag is called with the attribute skip-body=true
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单选题在jQuery的层次选择器中，要选取紧接在element1元素后的一个element2元素，正确的是（）。A
$（element1空格element2）B
$（element1element2）C
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$（element1~element2）
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