今天（1月31日）上午10点，河南省政府新闻办召开“河南省新型冠状病毒感染的肺炎疫情防控工作”第二场新闻发布会。大家关心的假期是否延长的问题有消息了。
发布会上，河南省人民政府副省长戴柏华现场介绍，为了有效减少人员聚集，阻断疫情传播，更好保障人民群众生命安全和身体健康，省政府研究决定：
一，河南省省内党政机关和事业单位2020年春节假期按照国务院统一要求，延长至2月2日，也就是农历正月初九（星期日），2月3日（星期一）起正常上班。
二、河南省内企业除防疫物资生产、居民生活用品供应、物流企业外，其他企业复工期限推迟到2月9日。
三、河南省内中小学、幼儿园开学时间推迟至2月17日以后，河南省内大专院校开学日期按教育部通知执行。
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Recently, China's first 20-kilowatt high-power Hall thruster, developed by China Aerospace Science and Technology Group Co., Ltd. 801, successfully completed the ignition test. The ignition time totaled 8 hours and the number of ignitions exceeded 30 times. The successful research and development of this thruster has realized the thrust of Hall electric thruster in China from millinewton to cattle.
During the test, the thruster had reliable ignition, stable operation, and stable working parameters. The measured thrust was 1 N, the specific impulse was 3068 seconds, and the efficiency was greater than 70%. The performance index reached the international advanced level.
Some Hall Thruster Products
It is reported that the thruster is designed with new technologies such as hollow cathode centering and long magnetic shield life. During development, key technologies such as high-current hollow cathodes, lightweight and compact accelerators, efficient thermal management, and high-voltage and high-power stable discharge have been adopted. They have the characteristics of large thrust, high specific impulse, long working life, and high reliability. Geostationary orbit) satellites, medium / heavy all-electric push platforms, deep space probes, earth orbit space transport platforms, space shuttles and other spacecraft, orbital maneuvering, providing efficient dynamic support for orbital maintenance and attitude control tasks.
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