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【单选题】
下列板块编号错误的是（ ）。A.
楼面板LB
B.
屋面板WB
C.
悬挑板XTB
D.
悬挑板XB
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反馈参考答案：
举一反三
【单选题】线性规划具有无界解是指
A.
存在某个检验数＞0,且此检验数所在的列上的系数均不＞0
B.
可行解集合无界
C.
有相同的最小比值
D.
最优表中所有非基变量的检验数非零
【单选题】线性规划具有无界解是指( )
A.
可行解集合无界
B.
有相同的最小比值
C.
存在某个检验数λ k >0且
D.
最优表中所有非基变量的检验数非零
E.
:C
F.
程度:中
G.
解析:
H.
:单选题2.线性规划具有多重最优解是指( )
I.
函数系数与某约束系数对应成比例
J.
表中存在非基变量的检验数为零 K. 解集合无界 L. 存在基变量等于零
【单选题】You stain membrane proteins with a fluorescent-labeled antibody and notice the membrane is evenly stained. After a few hours, all of the fluorescence is at one end of a cell. You can conclude that ( )...
A.
Lipids flip-flop in the membrane
B.
Proteins move laterally in the membrane
C.
The fluorescent dye was bleached
D.
Proteins act as transporters
【多选题】Following vesicle docking, how do SNARE proteins catalyze the fusion of the vesicle and target membranes?
A.
Once appropriately triggered, the tight pairing of v-SNAREs and t-SNAREs draws the two lipid bilayers into close apposition.
B.
The force of the SNAREs winding together squeezes out any water molecules that remain trapped between the two membranes, allowing their lipids to flow together to form a continuous bilayer.
C.
In a cell, other proteins recruited to the fusion site help to complete the fusion process.
D.
After fusion, the SNAREs are pried apart so that they can be used again.
【单选题】The fluid mosaic model of the membrane describes the membrane as
A.
containing a significant quantity of water in the interior.
B.
composed of fluid phospholipids on the outside and protein on the inside.
C.
composed of protein on the outside and fluid phospholipids on the inside.
D.
made of proteins and lipids that can freely move.
【单选题】What does the passage mainly discuss?
A.
How to make better decisions.
B.
The factors affecting our decisions.
C.
How to recognize the factors influencing our choices.
D.
The obstacles in making better choices.
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