肉眼可见的临界值是()
A: PM100
B: PM50
C: PM25
D: PM10
A: PM100
B: PM50
C: PM25
D: PM10
B
举一反三
- When will the product be ready A: 1 pm B: 3 pm C: 4 pm D: 6 pm
- 关于 PM 2.5 与 PM 10 说法正确的是()
- 查询软件包的命令是( ) A: pm -i filename B: pm -U filename C: pm -e filename D: pm -q filename
- 【单选题】为安装一个软件包,应使用 ( ) A: pm -i B: pm -e C: pm -q D: pm –V
- 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
内容
- 0
When did the woman arrive A: At 1:00 pm B: At 3:00 pm C: At 5:00 pm D: At 7:00 pm
- 1
静液柱压力计算公式是()。 A: pm=gρm/Hm B: pm=gρmHm C: pm=ρmHm D: pm=ρm/gHm
- 2
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
- 3
使用rpm安装软件包gconf-editor-2.28.0-3.el6.i686.rpm的命令是( )。 A: pm -ivh gconf-editor-2.28.0-3.el6.i686.rpm B: pm -q gconf-edito C: pm -e gconf-edito D: pm -ivh gconf-edito
- 4
When it is 10 am in London, what time is it in NZ? A: midday B: midnight C: 8 pm D: 10 pm