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【多选题】
下列属于正相关的现象是A.
流通费用率随商品销售额的增加而减少
B.
某产品产量随工人劳动生产率的提高而增加
C.
生产单位产品所耗工时随劳动生产率的提高而减少
D.
产品产量随生产用固定资产价值的减少而减少
E.
家庭收入越多，其消费支出也越多
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【单选题】People who eat a balanced diet should be healthier than those who only eat biscuits and hamburgers, ______?
A.
don’t they
B.
do they
C.
shouldn’t they
D.
should they
【简答题】People who eat at home most of the time have better nutrition than those who go out to eat , a recent study shows. Cornell University professors Lana Hall and Karen Bunch interviewed（面试，接见） 3900 peopl...
【单选题】下面代码采用缓冲的方式实现了将一个文件的内容复制到另一个文件的功能,下划线处应填写的代码是() import java.io.*; public class test { public static void main(String [] args){ try{ FileInputStream is = new FileInputStream( “ D:\\from.txt ” ); FileOu...
A.
BufferedOutputStream,read
B.
BufferedInputStream,write
C.
BufferedInputStream,read
D.
BufferedOutputStream,write
【简答题】People who eat at home most of the time have better nutrition than those who go out to eat , a recent study shows. Cornell University professors Lana Hall and Karen Bunch interviewed 3900 people in th...
【单选题】下面代码采用缓冲的方式实现了将一个文件的内容复制到另一个文件的功能。下划线处应填入的代码是import java.io.*;public class test{ public static void main(String[] args){ try{ FileInputStream is = new FileInputStream("D:\\from.txt"); FileOutputStream...
A.
BufferedInputStream,write
B.
BufferedOutputStream,write
C.
BufferedInputStream,read
D.
BufferedOutputStream,read
【单选题】（读写文件）下面代码采用缓冲的方式实现了将一个文件的内容复制到另一个文件的功能，下划线处应填写的代码是________。importjava.io.*;publicclassTest{publicstaticvoidmain(String[]args){try{FileInputStreamis=newFileInputStream(“D:\\from.txt”);FileOutputStream...
A.
Buffered OutputStream,read
B.
BufferedInputStream，write
C.
BufferedInputStream，read
D.
BufferedOutputStream，write
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