【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.
D.
young bacterial cells.
【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
【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
【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
【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( )。
【简答题】Pair the steps and solutions used in Gram staining.
【判断题】表压强是流体的真实压强与外界大气压强的差值。
【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 ...
【多选题】关于模板拆除施工安全的基本要求的说法,正确的有()。
A.
后张预应力混凝土结构或构件模板的拆除,侧模应在预应力张拉前拆除,其混凝土强度达到侧模拆除条件即可
B.
进行预应力张拉,必须在混凝土强度达到设计规定值时进行,底模必须在预应力张拉完毕后方能拆除
C.
不承重的梁、柱、墙等部位的模板,当混凝土强度达到表面及棱角不因拆除模板而受损时,即可进行拆除
D.
承重模板,应在标准养护的试块强度达到规定要求时,进行拆除
E.
拆模过程中,如发现实际结构混凝土强度并未达到要求,有影响结构安全的质量问题时,应暂停拆模,经处理、实际强度达到要求后,方可继续拆除
【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( )。