秋天的怀念生字词拼音

求内接于椭圆x^2/a^2+y^2/b^2=1,边平行于坐标轴的矩形中最大者的面积. 设当x≤0时,f(x)=1+x^2,x＞0时,f(x)=e^(-x),求∫(1,3)f(x-2)dx f(x)={x^2 -1≤x≤0;x-1 0 to protect our plant what things you are s to do different places 这个词怎么读? 进口AISI316L不锈钢与AISI316L不锈钢有区别吗?AISI316L不锈钢与AISI304不锈钢有什么区别? 宴酣之乐非丝非竹的意思是什么? “宴酣之乐,非丝非竹”的意思 you're not alone i will always in your mind 请问这句话大概中文意思, someday i will miss my We first met on a train in 2000.We both felt immediately that we each other for years.AWe first met on a train in 2000.We both felt immediately that we each other for years.A.knew B.have known C.had known D.know What will become short if you add letter? How much would you ( ) for repairing my watch?A:spend B:cost C:charge D:pay别的为什么不对? How much do you ( ) for the new watch?A buyB payC spendD cost 在做电解水的实验室,因纯水不导电,需要在水中加一点酸,则通过电解槽的电流方向与哪种离子移动方向相同?有人说电路刚从电源正极流出时应最大,当电流经灯泡或电阻后应逐渐变小,你认为 第2题 AISI Grade 304 Error (10327):VHDL error at xd.vhd(17):can't determine definition of operator ""+"" -- found 0 pos初学VHDL~LIBRARY IEEE;USE IEEE.STD_LOGIC_1164.ALL;ENTITY xd ISPORT (sel :IN std_logic;d0,d1 :IN std_logic;led :OUT std_logic);END ENTITY xd;ARCHITECTU vhdl VHDL error at dt.vhd(25):can't determine definition of operator ""="" -- found 0 possible delibrary ieee;use ieee.std_logic_1164.all;use ieee.std_logic_unsigned.all;entity dt isport(clk,ope,close:in std_logic;up1,up2,down2,down3:in std_logic;sto VHDL程序错误 Error (10482):VHDL error at washtop.vhd(33):object "o" is used but not declared求助library ieee;use ieee.std_logic_1164.all;use ieee.std_logic_unsigned.all;entity washerTop isport(load,start,clk :in std_logic;k :in std_logic_vector how much do you__ __ this book 钢管钢板钢梁的重量记算方法是什么? Happiness is like a pebble dropped into a pool to set in motion an ever-widening circle of ripples. set my heart into an unknow place.什么深意? well,exactly how much do you ___ for a haircut?A. paid B .charge 说明选的原因,不选的原因 设I=∫sec^3dx,则I=多少错了I=∫sec^3xdx 打漏了，呵呵 Secxdx的积分为什么等于-sec^3dx的积分 ∫x^3dx/(x^4-x^2+2) it seems the two are more deeply linked than we .这句里是不是seem后面省略了 that It seems that （raising） a genius is more popolar than ( ) a happy child in some families.括号里应填什么?翻译 mentally disabled children 这个表达对吗?还是mentally hurt children这个表达对? VHDL if ((conv_integer(sel)mod 2) = '0') can't determine definiton of operator ""=""addr_get:process(clk)beginif clk'event and clk = '1' thenif (conv_integer(sel) mod 2 = '0') then -- can't determine definiton of operator ""=""x1l