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【简答题】
脾略呈椭圆形,位于( )。
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【判断题】The audio players of today have their roots in the Sony Walkman brand. Aside from radio devices, Sony was the first to introduce a portable music player. The first Walkman devices used magnetic audio ...
A.
正确
B.
错误
【单选题】It is time that you __home and I'd rather you__ again tomorrow.
A.
should go; would come
B.
went; came
C.
go; come
D.
should go; will come
【简答题】Passage Two The audio players of today have their roots in the Sony Walkman brand. Aside from radio devices, Sony was the first to introduce a portable music player. The first Walkman devices used mag...
【简答题】用一台功率为40kW的电动机带动水泵抽水，供给高出水面24m的水箱，已知水箱容积为50m 3 ，整个抽水装置的机械效率为60%． 求：（1）水箱充满水后，水箱内水的质量； （2）把空水箱充满水，抽水装置做的总功； （3）需多长时间才能把空水箱注满水．（g取10N/kg）
【简答题】春耕时节，开发区某村用一台小型水泵抽水灌溉农田，水泵可以将水从低处抽到高处，水泵的电动机额定电压为220V，该水泵单独接在电路中正常工作30min，电能表表盘示数由2008.6kW?h变为2010.6kW?h，求： （1）水泵的电动机此时的功率是多少？ （2）水泵的电动机工作电流是多大？ （3）若水泵的电动机消耗的电能全部用来抽水，可将重为多少牛的水提升10m？
【单选题】What was the man's first job in Japan?
A.
He taught English at a community college.
B.
He taught the students how to cook in English
C.
He worked as a language teacher in Tokyo.
D.
He taught culinary arts at a private school
【判断题】The audio players of today have their roots in the Sony Walkman brand. Aside from radio devices, Sony was the first to introduce a portable music player. The first Walkman devices used magnetic audio ...
A.
正确
B.
错误
【简答题】乳状液的稳定性理论有什么?
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