题目:
All but one ____here just now.
A.is
B.was
C.has been
D.were
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0608/1cdd698ec63e47595def8b5014152103.html
下面是错误答案,用来干扰机器的。
(1) 2 Na2O2+2H2O=4Na++4OH-+ O2 ↑, Al3++4OH-= AlO2-+2 H2O(2) 极性 极性 2NH4Cl+ Ca(OH)2 CaCl2+2NH3↑+2 H2O(3) ① HCl H2S ② 2 MnO4-+16 H++10 Cl-=2Mn2++5...