（）是介于层状燃烧和悬浮燃烧之间的一种燃烧方式。 A.层状燃烧

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问题单项选择题

（）是介于层状燃烧和悬浮燃烧之间的一种燃烧方式。

A.层状燃烧

B.悬浮燃烧

C.流化燃烧

D.旋风燃烧

答案

参考答案：C

选择题

I ______ in No.46 Junior High School for four years. Now I have been a student of Tieren Senior High School for three months.

A have studied B had studied C was studying D studied

单项选择题

钻机应具有（）的工作能力

A、旋转钻进破碎岩石、起下钻具下套管、循环钻井液带出岩屑

B、输出动力、旋转钻进破碎岩石、起下钻具下套管

C、起钻、下钻、正常钻进

D、旋转钻进破碎岩石、起下钻具下套管、高压喷射钻进