肉毒杆菌食物中毒的特征A．对称性颅神经损害 B．呼吸肌麻痹为主要表现 C．消化道症状

Woman: Don't you know Jim works as a dish washer at a restaurant around the corner Man: It isn't a bad job to start with. I wouldn't mind that job for the summer if no others are available. Question: What does the man mean

A．He likes the job of a dish washer because it pays well.

B．He thinks it's important to have a good job from the beginning.

C．He hates to be a dish washer because it's boring.

D．He would work as dish washer in summer if he has to.

太阳发出的光，要经过8min20s才能到达地球，由此可知，太阳距地球多少km？（光速为3×10⁸m/s）

粉尘在电场里受电晕放电等作用而发生带电，粉尘（）强弱决定电收尘的收尘效率。

A、荷电性

B、凝聚性

C、润湿性

D、分散性

下列一组重大事件，按发生时间的先后进行排序，正确的是（）

①查理马特改革

②英国资产阶级革命

③巴黎公社革命

④拿破仑建立法兰西第一帝国

⑤英国 * * 运动

A.①②③④⑤

B.①③②④⑤

C.①②④⑤③

D.④①③②⑤

CIH病毒发作的表现是（）。