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【单选题】
不溶于水的氧化亚铜可溶于含硫酸铁的硫酸溶液中，这时生成的硫酸亚铁可用酸性高锰酸钾溶液滴定，从而测定氧化亚铜的量： Cu 2 O+Fe 2 (SO 4 ) 3 +H 2 SO 4 →FeSO 4 +CuSO 4 +H 2 O FeSO 4 +KMnO 4 +H 2 SO 4 →Fe 2 (SO 4 ) 3 +MnSO 4 +K 2 SO 4 +H 2 O 由上述反应知；0.1mol/L的KMnO 4 溶液1mL相当于氧化亚铜的量是 [ ]A.
360mg
B.
3.6g
C.
0.36g
D.
2.5×10 -4 mol
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【单选题】According to the author, the bringing up of the children ______.
A.
should be the task of both the husband and wife
B.
is only dependent on the women
C.
is irrelevant to the healthy development of the child
D.
is hard to define
【单选题】Under the open economy, the government faces the two objectives of internal and external balance. According to Mondale's "assignment law", the task of domestic balance should be assigned to (), and th...
A.
Fiscal policy, monetary policy,
B.
monetary policy, fiscal policy,
C.
onetary policy.income policy
D.
monetary policy . Income policy
【单选题】In an open economy, the government faces two goals of internal and external balance. According to Mundell's "assignment rule", the task of internal balance should be assigned to ( ), while the task...
A.
fiscal policy, monetary policy
B.
monetary policy, fiscal policy
C.
ncome policy, monetary policy
D.
income policy, fiscal policy
【单选题】The reward structure of a boring task should be different from the tasks that are inherently interesting to the player. Thus, which of the following is not true?
A.
Player are more prone to the interesting tasks on their own.
B.
Boring tasks can be paired with intrinsic motivations.
C.
There are two common strategies used to motivate people to work on humdrum tasks.
D.
We had better not trying to create man-made interest in an interesting task.
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