不管政治上分歧多大,美国的政党和媒体都承认,美国经济的生命力在于中小企业,特别是那些我们称之为“个体户”的微型企业我家的排氡装置坏了。美国的住房,凡有地下室的,都要进行氡含量的检测,并大多配有排氡装置。我两年前买房子时检测过氡含量,一切合格。但最近地下室被改成藏书房,我觉得那里宽敞安静,就下去读书。无意中看到排氡装置上的指示器压力为 Whatever the political differences, the political parties and the media in the United States have all recognized that the vitality of the U.S. economy lies in the failure of small and medium-sized enterprises, especially those of the micro-enterprises that we call “self-employed people” in our home. Housing in the United States, where there is a basement, have to detect radon content, and most are equipped with radon device. I tested the radon content two years ago when I bought a house and everything passed. But recently the basement was changed to a library, I think there is spacious and quiet, go on reading. Inadvertently see the radon device indicator pressure is