下列实验中（如图），观察不到明显变化的是[]A．B．C．D．-九年级化学

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• 如图所示是伽利略温度计．当气压不变，气温升高时，若不考虑液体的蒸发，则（）A．管内液面降低管外液面升高B．管内液面升高，管外液面降低C．管内外液面都升高D．管内外液面都降低-物理
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