问题
填空题
医用氧可用以下四种方法获得（）、（）、（）、（）。
答案
参考答案：答液氧塔外汽化法；膜式压缩机灌充法；液氧塔内汽化法（也叫液氧泵法、内压缩法）；改造后的无水润滑氧压机法
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医用氧可用以下四种方法获得（）、（）、（）、（）。
参考答案：答液氧塔外汽化法；膜式压缩机灌充法；液氧塔内汽化法（也叫液氧泵法、内压缩法）；改造后的无水润滑氧压机法
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| J__1__ 1st is New Year's Day. Women's Day (三八节) is on March 8th. The f __2__ day of May is May Day. China's Youth (青年) Day comes a __3__ it. It's on the t __4__ day after May Day. C__5__ Day is on June 1st. July 1st is our Party's birthday. August 1st is the Army(军队) Day. T__6__ Day is on the t __7__ of September and O __8__ 1st is our National Day (国庆节). Then we come to C__9__ Day. It's December 25th. Then we have winter (冬天) h __10__ in February. We have a lot of fun on these days. | |||