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【单选题】
为了确定吸附剂的动态吸附容量,实验中必须测定哪些参数?
A.
气体流量、穿透时间、气体进口浓度、穿透点气体浓度。
B.
操作压力、温度、气体流量、穿透时间、气体进口浓度、穿透点气体浓度。
C.
操作压力、温度、气体流量、气体进口浓度、穿透点气体浓度。
D.
操作压力、温度、气体流量、穿透时间、气体进口和出口浓度。
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【多选题】近代生物工程发展阶段的生产特点为:
A.
技术要求高
B.
需在无菌条件下进行
C.
大多数过程为好气发酵
D.
发酵规模巨大
【多选题】下列属于直摆性腿法的有()。
A.
正踢
B.
斜踢
C.
侧踢
D.
里合腿
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A.
One-fourth.
B.
One-half.
C.
Three-fourths.
D.
All of it.
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【单选题】Study these paragraphs and select the correct comment about the writing style. I think that essay writing is an important skill for all of us students. Don’t you see how many marks are given for this?...
A.
Formal, straightforward, clearly written, correct academic style
B.
Informal, like spoken (colloquial) language, incorrect academic style
C.
Too formal, uses too many words, incorrect academic style
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【多选题】近代生物技术的特点有
A.
产品类型多
B.
生产设备规模大
C.
过程简单
D.
生物技术发展快、要求高
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