一般在重介质分选过程中,悬浮液密度波动范围应小于±()g/cm3。A、0.4B、0.

题型:单项选择题

问题:

一般在重介质分选过程中,悬浮液密度波动范围应小于±()g/cm3

A、0.4

B、0.3

C、0.1

D、0.2

考点:选煤工程师重介质选煤重介质选煤题库
题型:单项选择题

关于记忆细胞,有误的是()

A.接受TI抗原刺激后形成

B.寿命较长

C.包括记忆性T细胞和B细胞

D.再次遇到相应抗原反应迅速

E.可参与淋巴细胞再循环

题型:单项选择题
口语社区, 根据上下文,完成对话。
A. Yes, you do have a cold.
B. Do I have to come again?
C. How long have you been like this?
D. I'll follow your advice(建议).
E. You'll have to stay in hospital for a few days.
F. How did it start?
G. Have you had any fever?
( D= doctor    P= patient(病人) )
D: What's the trouble with you?
P: I've got a terrible headache.
D: (1) _____
P: One day I went outdoors in a heavy rain, and then it started.
D: (2) _____
P: It's already been for a few days, and it gets worse and worse.
D: (3)_____
P: My wife took my temperature last night. She told me that it was 38.5?.
D: Let me check your pulse(把脉) and listen to your heart. (4) _____
P: Is it serious?
D: Oh, no. Drink plenty of warm water or juice, stay in bed for several days and keep warm.
P: Thank you, doctor. (5) _____
D: Please go to the injection room(注射室) and ask my nurse to give you an injection for your fever.
P: OK. Goodbye, doctor.
1_____   2_____   3_____  4_____  5_____
题型:单项选择题

从“专制”到“民主”的领导风格变化是一个连续的变化过程,有无数的组合方式,这是以下哪种理论的主要观点?()

A、管理方格理论

B、最难共事者模型理论

C、领导行为连续流理论

D、领导寿命周期理论

题型:单项选择题

下一步应采取的治疗为

A.不予处理

B.一次手术全部切除

C.分期、多次手术切除

D.血管造影了解病变范围

E.切开引流

题型:单项选择题

在集装箱多式联运中()成为典型工艺流程的第一个和最后一个环节。

A.航空运输

B.公路运输

C.水路运输

D.管道运输

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