题型:填空题 题类:期中考试 难易度:较易
已知,\(m\)是两条不同的直线,\(\alpha \),\(\beta \)是两个不同的平面,有下列四个命题:
\(①\)若\(l\subset \beta \),且\(\alpha \bot \beta \),则\(l\bot \alpha \);\(②\)若\(l\bot \beta \),且\(\alpha /\!/\beta \),则\(l\bot \alpha \);
\(③\)若\(l\bot \beta \),且\(\alpha \bot \beta \),则\(l/\!/\alpha \);\(④\)若\(α∩β=m \),且\(l/\!/m\),则\(l/\!/\alpha \).
则所有正确命题的序号是__________.