什么是统计假设?统计假设有哪几种?各有何含义?
有研究表明在出生后()中,婴儿就具有大小恒常性了。
林雅华博士指出,目前,我国政务微博总数已达到() ["4.6万多个","2.6万多个","3.6万多个","5.6万多个"]
public class Alpha{ public static void main( string[] args ){ if ( args.length == 2 ) { if ( args.[0].equalsIgnoreCase(“-b”) ) System.out.println( new Boolean( args[1] )); } } } And the code is invoked by using the command: java Alpha –b TRUE What is the result?() [" true"," null"," false"," Compilation fails."," The code runs with no output."," An exception is thrown at runtime."]
植物蒸发
土压力