纳布啡及其盐
参考答案:2939190030
解析:
海关商品名称:纳布啡及其盐海关编码:2939190030法定单位一:千克惠税:4%普税:50%增值税:17%监管条件:I
下列离子方程式正确的是 [ ]
A.尼泊金酸与碳酸氢钠反应:
B.醋酸溶液与新制氢氧化铜反应:2H++Cu(OH)2 → Cu2++2H2O
C.苯酚钠溶液中通入少量二氧化碳:C6H5O- + CO2 + H2O → C6H5OH+HCO3-
D.甲醛溶液与足量的银氨溶液共热:HCHO+2[Ag(NH3)2]++2OH-CO32-+2NH4++2Ag↓+2NH3+H2O
-- I can’t believe that Jeff _______ have quarreled and fought with his boss.
-- Well, if one _______ ask for trouble, it just can’t be helped.
A.would; will
B.must; may
C.should; must
D.need; dare