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【单选题】

Science Citation Index-Expanded(SCI-E)数据库中,课题“两性聚电解质溶液的结构研究”,最佳检索式为:

A.
ts="study on the structure of polyampholyte solution"
B.
ts=structure and ts="polyampholyte solution"
C.
ts=structure or ts=polyampholyte solution
D.
ts=structure and ts=polyampholyte solution
参考答案:
参考解析:
.
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举一反三

【单选题】属于等渗电解质溶液的液体是

A.
1:1溶液
B.
2:1溶液
C.
4:3:2溶液
D.
ORS溶液
E.
2:3:1溶液

【单选题】Science Citation Index-Expanded(SCI-E)数据库中,课题“两性聚电解质溶液的结构研究”,最佳检索式为:

A.
ts=structure and ts="polyampholyte solution"
B.
ts="study on the structure of polyampholyte solution"
C.
ts=structure or ts=polyampholyte solution
D.
ts=structure and ts=polyampholyte solution