下列哪些矿物在紫外光照射下发荧光() ["方铅矿","白钨矿","石榴子石","橄榄石"]
用万用表测电流时,电流从()表笔流入表内,从()表笔流出。 ["红","黄","黑","蓝","白","绿"]
栽培实践中的特性
态度不包括()。 ["行为的倾向性","对行为的总体评价","对行为的信念","对行为结束的评价","对社会规范的看法"]
public class Team extends java.util.LinkedList { public void addPlayer(Player p) { add(p); } public void compete(Team opponent) { /* more code here */ } } class Player { /* more code here */ } Which two are true?() [" This code will compile."," This code demonstrates proper design of an is-a relationship."," This code demonstrates proper design of a has-a relationship."," A Java programmer using the Team class could remove Player objects from a Team object."]
简述橡胶硫化(交联,固化)过程的四个阶段及其各阶段对橡胶性能的影响。