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【单选题】
下列材料中，属于B2级地面材料的是（ ）。A.
水泥刨花板
B.
水泥
C.
PVC卷材地板
D.
氯丁橡胶地板
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【单选题】v> What type of instrument is effective at separating the components of a mixture based on their affinity for an adsorbent material and uses high pressure pumps?
A.
v> (a) mass spectrometer
B.
(b) thermometer
C.
(c) pressure tube
D.
(d) HPLC
【单选题】Two proteins bind to the same ligand, and protein A has half of its binding sites occupied when the ligand concentration is 0.5 mM, while protein B has half of its binding sites occupied when the liga...
A.
Protein A binds more strongly, and K d = 0.3 mM.
B.
Protein A binds more strongly, and K d = 0.5 mM.
C.
Protein B binds more strongly, and K d = 0.3 mM.
D.
Protein B binds more strongly, and K d = 0.5 mM.
E.
Both proteins bind the ligand with the same affinity, and K d = 0.4 mM.
【单选题】What is the primary Realist explanation for the US-Israel alliance?
A.
Cultural affinity
B.
A shared history of immigration
C.
Geo-strategic calculations
D.
None of the above
【单选题】Which of the following best describes what is meant by Linux Affinity on AIX？（）
A.
The ability to install a Linux system on an AIX system
B.
The ability to install an AIX system on a Linux system
C.
The ability to compile and run a Linux application on AIX
D.
The ability to compile and run an AIX application on Linux
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