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【单选题】
选用钻井液除砂器时，除砂器的处理量一般为钻井时最大排量的（）。A.
75%
B.
100%
C.
125%一150%
D.
180%
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反馈参考答案：
举一反三
【单选题】You can ask your child to tell stories based on pictures.
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】Why did she ask her teachers to teach her at home?
A.
She was busier than before.
B.
It was more convenient.
C.
She liked to exercise at home.
D.
She was given a promotion.
【简答题】You Can ask your child to tell stories based on pictures.
【单选题】Passage Four Questions 36 to 40 are based on the following passage. If you want to teach your children how to say sorry, you must be good at saying it yourself, especially to your own children. But ho...
A.
she doesn’t feel that she should have apologized
B.
she does not realize that the child has been hurt
C.
the child may find the apology easier to accept
D.
the child may feel that he owes her an apology
【简答题】某电源外接 1 Ω负载时端电压为 4V ,换接 2.5 Ω负载时输出电流为 2A ,则电源的电动势 E= ,内阻 Ro= 。该电源接上 Ω负载时输出功率最大,最大输出功率为 。
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