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【单选题】
图示正弦电流电路中电压u(t)的振幅等于 。A.
1V
B.
4V
C.
10V
D.
20V
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参考解析：
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皮皮学刷刷变学霸
举一反三
【多选题】The “law of demand” states that
A.
The demand curve slopes down from left to right
B.
The quantity demanded increases as prices falls
C.
There is a negative relationship between price and quantity demanded
D.
Demand increases as price increases
【单选题】Robots have ______ humans from heavy work and offer us much more free time.
A.
freed
B.
be freed
C.
freedom
D.
fresh
【简答题】某压力表的测量范围为0～1MPa，精度等级为1级，试问此压力表允许的最大绝对误差是多少？若用标准压力计来校验该压力表，在校验点为0.5MPa时，标准压力计上读数为0.508MPa，试问被校压力表在这一点上是否符合1级精度，为什么？
【单选题】The “law of demand” states that changes in _________.
A.
demand are related directly to changes in supply
B.
the quantity demanded of a good are not related to changes in the quantity supplied
C.
the quantity demanded of a good are inversely related to changes in its price
D.
demand are inversely related to changes in supply
【单选题】Justice, as well as the law, ______that these bandits ______severely punished.
A.
demand... be
B.
demands... be
C.
demand... are
D.
demands... are
【单选题】_____ the cat,she has to give it to the neighbour. [ ]
A.
As she likes much
B.
As she much likes
C.
Much as she likes
D.
As much she likes
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