根据《中华人民共和国物权法》，下列财产中，可作为抵押权标的是()。
A. 土地使用权
B. 公立医院的医疗卫生设施
C. 依法被查封的财产
D. 正在建造的建筑物
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The data collected from Experiments 1 and 2 show:
A. no clear trend in sulfate concentration among terrestrial deposits, but increasing sulfate concentrations in the lakes.
B. increasing sulfate concentration among terrestrial deposits, but decreasing sulfate concentrations in the lakes.
C. no clear trend in sulfate-concentration levels either among terrestrial deposits or among the lakes.
D. increasing sulfate concentrations among terrestrial deposits, but no clear trend in sulfate-concentration levels in the lakes.
应当先履行债务的当事人，有确切证据证明对方经营状况严重恶化，可以()。
A. 变更合同
B. 解除合同
C. 中止履行
D. 终止合同
中国银监会选择以（）作为我国混合资本工具的主要形式。
A. 储蓄国债
B. 可转换债券
C. 场外交易的企业债券
D. 银行间市场发行的债券
Based on the information in Scientist 1&39;s view, which of the following materials must be present on Europa if a magnetic field is to be generated on Europa？
A. Frozen nitrogen
B. Water ice
C. Dissolved salts
D. Molten magma
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