我国化妆品卫生规范规定的微生物指标不包括
A．细菌总数B．粪大肠埃希菌C．铜绿假单胞菌D．金黄色葡萄球菌E．沙门菌
参考答案：E
一束光线照射到平面镜上，当反射光线与入射光线的夹角为140°°时，反射角等于 °，入射光线与镜面的夹角等于 °
Most comets have two kinds of tails, one made up of dust, ______ made up of electrically charged particles called plasma.
A．one another
B．the other
C．other ones
D．each other
