2025年，离岸人民币汇率从年初的7.30上涨到6.99，上涨了4.2%。
Publication date: 10 March 2026
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"These new figures show the total cost to taxpayers will be far higher than previously feared.
Optical-based smoke alarms use light instead. They are slightly better at detecting the large smoke particles created by slow, smouldering fires. When such particles enter a chamber in the device, they scatter light from a small light source, which is then picked up by a photoelectric sensor.