【判断题】组织结构本质是为实现组织战略目标而采取的一种分工协作体系,组织结构必须随着组织重大战略的调整而调整。
【单选题】Both longitude and latitude ______ in degrees, minutes and seconds.
【简答题】完形填空。 The best way of learning a language is always using it. The best way of learning 1 English is talking in English as much as possible. Sometimes you'll get your 2 mixed up and people will not 3 ...
【简答题】往含有Cu2+、Fe3+和Mg2+(浓度均为0.1 mol/L)的溶液中加入过量铁粉,充分反应后,溶液中浓度最大的阳离子是 .
【单选题】如果溶液中 Fe 3+ 和 Mg 2+ 离子的浓度都是 0.1 mol·L -1 ,溶液的 pH 在什么范围使 Fe 3+ 定量形成氢氧化物沉淀 , 而与 Mg 2+ 加以分离 ? 已知 Ksp[Fe(OH) 3 ] = 2.79×10 -39 , Ksp{Mg(OH) 2 } = 5.61×10 - 12 。
【单选题】下列溶液中微粒的物质的量浓度关系正确的是( )
A.
在FeCl 3 溶液中加入Mg(OH) 2 固体,溶液中c(Fe 3+ )下降
B.
CH 3 COOH溶液加水稀释后,恢复至原温度,溶液中c(OH - )和Kw都增大
C.
0.1 mol/L Na 2 CO 3 溶液:c(OH - )=c(HCO 3 - )+c(H 2 CO 3 )+c(H + )
D.
常温下,向0.01 mol/L NH 4 HSO 4 溶液中滴加NaOH溶液至中性:c (Na + )>c(NH 4 + )>c(SO 4 2- )>c(OH - )=c(H + )
【单选题】Both longitude and latitude ______ in degrees, minutes and seconds.
【判断题】Formal and informal are two ways if classifying groups.
【简答题】用方框中所给单词或短语的适当形式填空 happy, proud, laugh at, stay in touch, try one's best, wake up 1.They all ____________ to study hard in order to go to college one day. 2.My neighbour is moving away, but I hope tha...
【简答题】单词拼写。 l. In China, people _____ (握手) when they meet. 2. It's not polite to _____ (顺便拜访) a friend's home. 3. Don't talk to him like that. He's a child ____ (毕竟). 4. I'm gradually _____ (习惯于) the table...