This book is beautiful, but that book is

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问题选择题

This book is beautiful, but that book is ____ interesting ____ it. Most of the students like to
read that one.

[ ]

A. more; than
B. so; than
C. as; as
D. not so; as

答案

选择题

下列离子方程式不正确的是 [ ]

A．苯酚溶液中加入Na₂CO₃：C₆H₅OH+CO₃^2-→C₆H₅O^-+HCO₃^-

B．向Ba(OH)₂溶液中逐滴加入NH₄HSO₄溶液至刚好沉淀完全：Ba²⁺+OH^-+H⁺+SO₄^2-＝BaSO₄↓+H₂O

C．向Ba(OH)₂溶液中加入过量NaHSO₃溶液：2HSO₃^-+Ba²⁺+2OH^-＝BaSO₃↓+SO₃^2-+2H₂O

D．甲醇-氧气燃料电池（KOH溶液作电解质溶液）负极的电极反应式：CH₃OH-6e^-+8OH^-＝CO₃^2-+6H₂O

单项选择题

喷射钻井要求钻井泵（）。

A、排量大、泵压低、功率大

B、排量大、泵压高、功率低

C、排量小、泵压高、功率大

D、排量大、泵压高、功率大