题目内容

人体的转动形式?

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结晶器的倒锥度是指结晶器的上口尺寸小于下口尺寸。

A. 正确
B. 错误

下列添加剂中属于营养性添加剂的是()

A. 大蒜素
B. 核黄素
C. 虾青素
D. 黄霉素

园林给水水源可分为()和()。

The officer in charge of the engineering watch shall ensure that all machinery involved with the maneuvering of the ship can immediately be placed in the () of operation when notified that the ship is in congested waters.

A. manual mode
B. automatic mode
C. remote mode
D. follow-up mode

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