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- 1有含盐率为3.2%的食盐水500克,为了把它变成含盐率为8%的食盐水,需蒸发多少克水?
- 2怎样区分一个句子中的主句和从句
- 3The plates are on the table.改写否定句,一般疑问句
- 4would you like another cup of tea?Thanks A.Do B.Will C.My I D.Am I
- 51、一台并励直流电动机,UN =220V,IN =80A,电枢回路总电阻Ra=0.036Ω,励磁回路总电阻Rf =110Ω,附加损耗PS =0.01PN,ηN=0.85.试求：1）、额定输入功率P1； 2）、额定输出功率P2；3）、总损耗∑
- 6捕蛇者说 中反映作者当时处于受贬低地位的句子有哪些
- 7John plays volleyball every saturday.(对划线部分提问）划线部分是volleyball.
- 8His father is (in the car).对括号内提问
- 9春色满园是不是成语
- 10If you want to achieve the goal,you had better ask him for__(advise) I don't know what____(wear)