2015年8月31日,国务院印发了《促进大数据发展行动纲要》。
class A { } class Alpha { private A myA = new A(); void dolt( A a ) { a = null; } void tryIt() { dolt( myA ); } } Which two statements are correct?() [" There are no instanced of A that will become eligible for garbage collection."," Explicitly setting myA to null marks that instance to be eligible for garbage collection."," Any call on tryIt() causes the private instance of A to be marked for garbage collection."," Private instances of A become eligible for garbage collection when instances of Alpha become eligible for garbage collection."]
公安机关在侦查王某的盗窃案时收集到以下证据,其中属于直接证据的有()。 ["现场发现王某的指纹","在王某家里发现被盗的赃物","证人李某看到王某盗窃行为的证言","王某承认盗窃的供述"]
天然气初加工后,其组成中()所占的比例最大。 ["甲烷","氢气","乙烷","丁烷"]
14世纪意大利复调音乐的主要体裁有哪些() ["奥尔加农","牧歌","猎歌","弥撒曲","巴拉塔"]
简述国外早期儿童教育课程的发展趋向。