Exec runs a command and returns its exit code:
（四）本社区三分之一以上居民代表或者十分之一以上的居民要求审计的其他事项。
，这一点在同城约会中也有详细论述
第三十七条 国家建立核技术应用废旧放射源回收制度。放射源使用单位应当按照国家规定将废旧放射源交回生产单位、返回原出口方或者送交取得相应资质的单位贮存、处置。
Chemicals from our phone and TV screens are accumulating in the brains of endangered dolphins and porpoises. New research shows these "liquid crystal monomers" from e-waste can cross the blood-brain barrier and may disrupt DNA repair, highlighting the growing impact of electronics on marine life.
Model Agreement