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搜题
【单选题】
某一电池由下列两个半反应组成:A ⇌A2++2e-和B2++2e- ⇌B。反应A+B2+ ⇌A2++B的平衡常数是1.0×104,则该电池的标准电动势是:A.
+1.20V
B.
+0.12V
C.
+0.07V
D.
-0.50V
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举一反三
【简答题】Listen carefully and make proper responses
【简答题】Listen carefully and make proper responses
【单选题】Some works of literature hold one's interest to the very last page, but others serve only as a ______, to be kept handily at a bedside table.
A.
reference
B.
soporific
C.
pleasure
D.
reminder
【单选题】hold one’s feet to the fire ( )
A.
do some bad things secretly
B.
get control over someone or something.
C.
ruin one’s own plan through foolish words
D.
to put pressure on someone to do something
【简答题】Listen carefully and make proper responses
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