Interview One The peak for text messaging is between ______. A: 10:30 pm and 11:00 pm B: 7:30 am and 8:00 am C: 10:30 am and 11:00 am D: 8:00 pm and 10:30 pm
Interview One The peak for text messaging is between ______. A: 10:30 pm and 11:00 pm B: 7:30 am and 8:00 am C: 10:30 am and 11:00 am D: 8:00 pm and 10:30 pm
关于 PM 2.5 与 PM 10 说法正确的是（）
关于 PM 2.5 与 PM 10 说法正确的是（）
飘尘( PM10)：粒较小，d 10μm。
飘尘( PM10)：粒较小，d 10μm。
When it is 10 am in London, what time is it in NZ? A: midday B: midnight C: 8 pm D: 10 pm
When it is 10 am in London, what time is it in NZ? A: midday B: midnight C: 8 pm D: 10 pm
PM10是指＜10微米,PM2.5是指≦2.5微米.那就是PM10包括PM2.5,那为何检测不出来?
PM10是指＜10微米,PM2.5是指≦2.5微米.那就是PM10包括PM2.5,那为何检测不出来?
Conversation two When will Mrs. Griffin arrive at Sunrise Hotel A: at 9:15 pm B: at 9:35 pm C: at 10:00 pm
Conversation two When will Mrs. Griffin arrive at Sunrise Hotel A: at 9:15 pm B: at 9:35 pm C: at 10:00 pm
一般将空气动力学直径小于10μm的颗粒物，称为（ ） A: 降尘 B: TSP C: PM 10 D: PM 2.5
一般将空气动力学直径小于10μm的颗粒物，称为（ ） A: 降尘 B: TSP C: PM 10 D: PM 2.5
PM10是大气中直径小于等于10微米的颗粒物。
PM10是大气中直径小于等于10微米的颗粒物。
In（ ）, people have lunch after 2 pm and may not begin dinner before 10 pm . A: France and Poland B: Spain and Greece C: the UK and the US D: Germany and Poland
In（ ）, people have lunch after 2 pm and may not begin dinner before 10 pm . A: France and Poland B: Spain and Greece C: the UK and the US D: Germany and Poland
该致病菌感染人体的主要途径是（）。 A: 飞沫 B: 气溶胶 C: PM<sub>10</sub> D: PM<sub>2.5</sub> E: 灰尘
该致病菌感染人体的主要途径是（）。 A: 飞沫 B: 气溶胶 C: PM<sub>10</sub> D: PM<sub>2.5</sub> E: 灰尘