期货可以大致分为两大类，即商品期货和（） ["金属期货","利率期货","股指期货","金融期货"]
轮胎在保管期间应定期进行检查，每（）检查一次。 ["10天","半个月","1个月","2个月"]
下列错误的是（） ["姓名标签：NAMETABLE","转机旅客：TRANSITPASSENGER","SCALE：秤","SUITCASE：手提箱"]
可用于转矩在线测量的方法是（） ["测功机法","校正过的直流电机法","转矩仪法","电阻应变法"]
Given a correctly compiled class whose source code is： package com.sun.sjcp； public class Commander { public static void main（String[] args） { // more code here } } Assume that the class file is located in /foo/com/sun/sjcp/， the current directory is /foo/， and that the classpath contains “.“ （current directory）. Which command line correctly runs Commander？（） [" java Commander"," java com. sim. sjcp.Commander"," java com\/sun\/sjcp\/Commander"," java -cp com.sun.sjcp Commander"," java -cp com\/sun\/sjcp Commander"]
简述自动对焦相机的主要特点。
