皮皮学，免费搜题
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搜题
【单选题】
正常足月儿的出生体重是A.
<1000g< /div>
B.
1000~1500g
C.
1600~2000g
D.
2000~2400g
E.
≥2500g
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【简答题】已知正弦交流电压 ,则有效值是 V,角频率是 rad/s,频率为 Hz,初相是 度.
【简答题】已知一正弦电压的幅值为310V。频率为50Hz,初相为 。
【简答题】已知正弦交流电压 ,则它的频率为 Hz,初相角是 。
【多选题】Where can you get a pet?
A.
Buy one in a pet shop.
B.
Ask someone to steal one for you.
C.
Buy one from a zoo.
D.
Wait for a baby pet from your friend's pet.
E.
Buy one from Taobao.
【简答题】已知一正弦电流 ,则 该电流的有效值为 A ,频率为 Hz ,初相位为 。
【简答题】,该正弦量的有效值为 A ,角频率为 rad/s ,频率为 Hz ,周期为 s ,初相位为 。
【简答题】生产甲产品领用A材料1000元。
【单选题】I like your pet dog very much. But I can’t find _______ in the pet shop. Where did you buy _______?
A.
it, it
B.
it, one
C.
one, one
D.
one, it
【单选题】What is NOT the significance of the shift of business ownership?
A.
People can have income even they don't go to work.
B.
The employee won't blame the boss for his unfair allocation of profits.
C.
Workers won't complain about 'greedy corporations. '
D.
Retired workers can still receive money if they have contributed retirement plans before.
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