栲胶碱液降低泥浆粘度的作用机理是什么?

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问题:

栲胶碱液降低泥浆粘度的作用机理是什么?

考点:水井钻井技术员知应会水井钻井技术员知应会题库
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宫颈举痛或摇摆痛是指()

A.将宫颈轻轻上抬或左右摆动引起剧烈疼痛

B.将子宫轻轻上抬或左右摆动引起剧烈疼痛

C.将输卵管轻轻上抬或左右摆动引起剧烈疼痛

D.将卵巢轻轻上抬或左右摆动引起剧烈疼痛

E.将宫颈轻轻上抬或左右摆动引起腹部压痛

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一级保密资格单位保密委员会主任应当由谁担任。()

A、行政副职

B、单位负责人

C、综合处处长

D、纪委书记

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In the dining room of my grandfather’ s house stood his heavy clock. Meals in the dining room were a (21) for our four generations to become one. My grandfather’ s clock always stood like a trusted old family friend, (22) us playing jokes and tellingstories, which was already a (23) of our life.

When I was a child, the old clock interested me. I watched and listened to it during (24) I was surprised how at (25) times of the day, the clock would strike three times, six times or more, with a wonderful great (26) that echoed throughout the house. The clock chimed year after year, a part of my (27) , a part of my heart.

Even more (28) to me was my grandfather’s special action each day. He meticulously (29) the clock with a special key each day. The key was magic to me. It (30) our family’ s magnificent clock ticking and striking all year round.

29()

A.busy 

B.urgent 

C.happy 

D.different

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病人,女,发病2D,下面哪个症状、体征对排除感冒的诊断最有意义().

A.发热;

B.咽痛;

C.咳嗽;

D.扁桃体红肿;

E.纳差.

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污泥负荷

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