Which of the following is NOT a common or correct use of a custom control？（） Adding a company logo to business documents。 As the UI widgets for 1 specificXPage that will never be replicated by any other XPages， ever。 Adding mailing label information to mail and memo pages。 As a control that needs to appear conditionally， depending on the result of a formula。
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Which statement is true regarding the INTERSECT operator?（） It ignores NULL values 。 Reversing the order of the intersected tables alters the result 。 The names of columns in all SELECT statements must be identical 。 The number of columns and data types must be identical for all SELECT statements in the query&e。
Which two statements are true about setting the per-thread buffers higher than required?（） More memory per thread is beneficial in all scenarios。 It causes increased overhead due to initial memory allocation。 It can affect system stability during peak load times, due to swapping。 It requires increasing the thread_cache_size variable。
基站空调室外机一年要进行至少（）次的清洗工作。 1。 2。 3。 4。
乐观决策法是（）
