引进型300MW汽轮机动叶有哪些特点?

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问题:

引进型300MW汽轮机动叶有哪些特点?

考点:电力生产“1000个为什么”单元机组集控基础知识单元机组集控基础知识题库
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属于减毒活疫苗的是()

A.卡介苗、百日咳疫苗

B.卡介苗、破伤风疫苗

C.麻疹疫苗、脊髓灰质炎疫苗

D.脊髓灰质炎疫苗、乙型脑炎疫苗

E.乙型脑炎疫苗、狂犬病疫苗

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单克隆冷球蛋白有()。

A.淋巴瘤

B.慢性淋巴细胞性白血病

C.原发性巨球蛋白血症

D.类风湿关节炎

E.巨细胞病毒感染

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下列骨骼不参与眼眶构成的是()

A.筛骨

B.蝶骨

C.腭骨

D.颞骨

E.上颌骨

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It’s all annual back-to-school routine. One morning you wave goodbye, and that (1) evening you’re burning the late-night oil in sympathy. In the race to improve educational standards, (2) are throwing the books at kids. (3) elementary school students are complaining of homework (4) What’s a well-meaning parent to do.As hard as (5) may he, sit back and chill, experts advise. Though you’ve got to get them to do it, (6) helping too much, or even examining (7) too carefully, you may keep them (8) doing it by themselves. "I wouldn’t advise a parent to check every (9) assignment," says psychologist John Rosemond, author of Ending the Tough Homework. "There’s a (10) of appreciation for trial and error. Let your children (11) the grade they deserve. " Many experts believe parents should gently look over the work of younger children and ask them to rethink their (12) . But "you don’t want them to feel it has to be (13) ," she says.

That’s not to say parents should (14) homework-first, they should monitor how much homework their kids (15) . Thirty minutes a day in the early elementary years and an hour in (16) four, five, and six is standard, says Rosemond. For junior-high students it should be " (17) more than an hour and a half," and two for high school students. If your child (18) has more homework than this, you may want to check (19) other parents and then talk to the teacher about (20) assignments.

11()

A.acquire

B.earn

C.gather

D.reach

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工业沸腾装置应在什么沸腾状态下操作?为什么?

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