脉冲萃取塔的脉冲机构由()构成。A、四个缓冲罐和一台循环泵 B、两个缓冲罐和一个旋转

题型:单项选择题

问题:

脉冲萃取塔的脉冲机构由()构成。

A、四个缓冲罐和一台循环泵

B、两个缓冲罐和一个旋转阀机构

C、四个缓冲罐、一个旋转阀机构和一台循环泵

D、两个缓冲罐、一个旋转阀机构和一台循环泵

考点:己内酰胺装置操作工己内酰胺装置操作工(中级)己内酰胺装置操作工(中级)题库
题型:单项选择题

世界第一长河是(  )

A.长江

B.恒河

C.亚马孙河

D.尼罗河

题型:单项选择题

以下与表面活性剂有关的参数是()

A.HLB值

B.KrafftPoint

C.起昙

D.浊点

E.低共熔点

题型:单项选择题

痢疾杆菌是否引起细菌性痢疾取决于()

A.痢疾杆菌属哪一群

B.痢疾杆菌内毒素

C.痢疾杆菌外毒素

D.痢疾杆菌肠毒素

E.痢疾杆菌对肠黏膜有无侵袭力

题型:单项选择题

汽油机的平均热效率为70%,其余的热效率则用于克服发动机活塞高速往复运动的惯性。

题型:单项选择题

David, a hyperkinetic 5-year-old, exhibits signs of extreme restlessness, short attention span, and impulsiveness. In order to alter the child’s milieu that would likely be most therapeutic for him, what could the nurse do()

A. Define behaviors of the child that will be acceptable and those that will be unacceptable.

B. Allow the child freedom to choose activities in which to participate and other children with whom to associate.

C. Increase the child’s sensory stimulation and activity.

D. Limit the child’s opportunities to display anger and frustration.

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