HARRISBURG - The Pennsylvania state House on Wednesday gave divided approval to a Republican-sponsored bill to let many retail stores remain open during a declared state of disaster emergency, which backers said would safely prevent smaller businesses from going broke.The chamber voted 117-84 to allow retailers to be open if they restrict operations to a single employee and a single customer, or can fulfill drive-up sales that limit contact.Six Democrats joined the unanimous Republican caucus in voting for the legislation.