【单选题】
A <{p}><{font _mstmutation="1" _msttexthash="18267977" _msthash="9062"}>蛋白质盐析<{/font}><{br/}><{/p}>
B <{p}><{font _mstmutation="1" _msttexthash="16832946" _msthash="9077"}>蛋白质变性<{/font}><{br/}><{/p}>
C <{p}><{font _mstmutation="1" _msttexthash="18152459" _msthash="9078"}>蛋白质沉淀<{/font}><{br/}><{/p}>
D <{p}><{font _mstmutation="1" _msttexthash="26590070" _msthash="9079"}>蛋白质两性性质<{/font}><{br/}><{/p}>
E <{p}><{font _mstmutation="1" _msttexthash="33092462" _msthash="9080"}>蛋白质的胶体性质<{/font}><{br/}><{/p}>
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