There__are__(be)different kinds of food in the shop.为什么用“are”Milk and Coke are my favourite drinks为什么用are

There__are__(be)different kinds of food in the shop.为什么用“are”Milk and Coke are my favourite drinks为什么用are diff是什么意思 diff time sad += (diff < 0)?(-diff):diff; c语言, 证券指数MACD DIFF 英语翻译in diff negative goal diff翻译 matlab求导,总是跳出warning,>> sym t;Xe='sqrt(800*800-430*430*(300*sin(t)-125)^2/((300*cos(t))^2-(300*sin(t)-125)^2))+430*300*cos(t)/sqrt((300*cos(t))^2+(300*sin(t)-125)^2)';diff(Xe)diff(Xe,2)Warning:The method char/diff will be removed in a fut no diff result benn found 股票里面的DIFF是什么意思? matlab输入diff(diff(diff(1/6*x^3)))有问题吗?怎么不出现结果? 英语翻译Advertising cultural expression of the form shown in the performance with a combination of literary and artistic trends,reflected in the motivation to sell is to sell at different levels.Marketing motivation can be divided into three diff 英语翻译GeneralAll sales are made pursuant to these terms and conditions and Wescast Industries Inc.,hereinafter called the seller,shall not be bound by any provisions in the buyer's purchase order and/or drawings,and/or specifications which diff 在MACD中ZERO.DEA.DIFF是什么 maCD.DIFF.DEA的数字是什么意思 DIFF指标是什么英文的缩写? y=diff(u)/0.MATLAB matlab编程中 出现Matrix must be square.怎么办?Q=0.11;g=9800;gamma=4.8*10^-5;rho=1.109*10^-6;H=9;d=1;u0=4*Q/(pi*d^2);syms rsy=H-(u0^2/(2*g))*(d^4./(16*rs.^4)-1)-4*gamma*(d./(2*rs)-1)/(d*g*rho); R1=diff(y);%y对r（s）求一阶偏导 R2=diff(y