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【单选题】
关于气流式粉碎机的叙述不正确的是
A.
又称微粉机,可用于粒度要求为3~20μm的超微粉碎
B.
适用于热敏感和低熔点物料的粉碎
C.
通过超音速气流使粒子间、粒子与器壁间强烈撞击进行粉碎
D.
粉碎动力来源于高速旋转锤头的冲击和剪切作用
E.
一般进料越多,粉碎物的粒度越大
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【单选题】Assume that you are viewing a Gram-stained field of red cocci and blue rods through the microscope. You can safely conclude that you have ( )
A.
made a mistake in staining.
B.
two different species.
C.
old bacterial cells.
D.
young bacterial cells.
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【单选题】The order of stains in Gram-staining procedure is
A.
Crystal violet, Iodine solution, Alcohol, Saffranine
B.
Iodine solution, Crystal Violet, Saffranine, Alcohol
C.
Alcohol, Crystal Violet, Iodine solution, Saffranine
D.
None of these
查看完整题目与答案
【单选题】Assume that you are viewing a Gram-stained field of red cocci and blue bacilli through the microscope. You can safely conclude that you have
A.
made a mistake in staining
B.
two different species
C.
old bacterial cells
D.
young bacterial cells
查看完整题目与答案
【简答题】After Gram staining, the Gram-negative bacteria are in ( ) .
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【单选题】Which of the following about Gram staining is most correct:
A.
Heating is done to promote entry of stain into cell wall of both Gram +ve and –ve bacteria
B.
If observed staining technique and microscopy before decolorization, both Gram +ve and –ve bacteria appear same
C.
Teichoic acid is present in the cell wall of Gram–ve bacteria
D.
Results must be observed under electron microscope
查看完整题目与答案
【简答题】Pair the steps and solutions used in Gram staining.
查看完整题目与答案
【判断题】表压强是流体的真实压强与外界大气压强的差值。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Complete the following sentences according to the text. Most organisms are classified by their reaction to ( ). An organism that is ( ) must have an intact cell wall. The basic dye diffuses ...
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【单选题】What is the reason for decolourisation in gramnegative bacilli in Gram staining?
A.
Due to the two dyes used in staining
B.
Thin peptidoglycan layer
C.
Cell membrane integrity
D.
Teichoic acid
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【多选题】梁板底模板拆除时,混凝土试块强度必须达到设计的立方体抗压强度标准值规定的百分率δ,下列表述正确的有( )。
A.
拆除跨度4m的板底模，δ≧50%
B.
拆除跨度5m的板底模，δ≧75%
C.
拆除跨度7m的板底模，δ≧75%
D.
拆除跨度5m的梁底模，δ≧75%
E.
拆除跨度9m的梁底模，δ≧100%
查看完整题目与答案
相关题目：
【单选题】Assume that you are viewing a Gram-stained field of red cocci and blue rods through the microscope. You can safely conclude that you have ( )
A.
made a mistake in staining.
B.
two different species.
C.
old bacterial cells.
D.
young bacterial cells.
查看完整题目与答案
【单选题】The order of stains in Gram-staining procedure is
A.
Crystal violet, Iodine solution, Alcohol, Saffranine
B.
Iodine solution, Crystal Violet, Saffranine, Alcohol
C.
Alcohol, Crystal Violet, Iodine solution, Saffranine
D.
None of these
查看完整题目与答案
【单选题】Assume that you are viewing a Gram-stained field of red cocci and blue bacilli through the microscope. You can safely conclude that you have
A.
made a mistake in staining
B.
two different species
C.
old bacterial cells
D.
young bacterial cells
查看完整题目与答案
【简答题】After Gram staining, the Gram-negative bacteria are in ( ) .
查看完整题目与答案
【单选题】Which of the following about Gram staining is most correct:
A.
Heating is done to promote entry of stain into cell wall of both Gram +ve and –ve bacteria
B.
If observed staining technique and microscopy before decolorization, both Gram +ve and –ve bacteria appear same
C.
Teichoic acid is present in the cell wall of Gram–ve bacteria
D.
Results must be observed under electron microscope
查看完整题目与答案
【简答题】Pair the steps and solutions used in Gram staining.
查看完整题目与答案
【判断题】表压强是流体的真实压强与外界大气压强的差值。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Complete the following sentences according to the text. Most organisms are classified by their reaction to ( ). An organism that is ( ) must have an intact cell wall. The basic dye diffuses ...
查看完整题目与答案
【单选题】What is the reason for decolourisation in gramnegative bacilli in Gram staining?
A.
Due to the two dyes used in staining
B.
Thin peptidoglycan layer
C.
Cell membrane integrity
D.
Teichoic acid
查看完整题目与答案
【多选题】梁板底模板拆除时,混凝土试块强度必须达到设计的立方体抗压强度标准值规定的百分率δ,下列表述正确的有( )。
A.
拆除跨度4m的板底模，δ≧50%
B.
拆除跨度5m的板底模，δ≧75%
C.
拆除跨度7m的板底模，δ≧75%
D.
拆除跨度5m的梁底模，δ≧75%
E.
拆除跨度9m的梁底模，δ≧100%
查看完整题目与答案