【单选题】1 前腹部有压痛、黄疸、消化不良、腹水,提示可能发生的疾病是
【简答题】How to reduce your carbon footprint?
【单选题】carbon footprint 什么意思?
【多选题】Which of the following statements about carbon footprint are correct?
A.
Your carbon footprint is the sum of all emissions of CO₂, which were induced by your activities in a given time frame. Usually a carbon footprint is calculated for the time period of a year.
B.
The world-wide average is 4 tons of CO₂ per person per year; the average of all industrialized nations is about 11 tons of CO₂ per person per year (2002).
C.
Few people express their carbon footprint in kg carbon rather than kg CO₂. You can always convert kg CO₂ in kg carbon by multiplying with a factor 0.27.
D.
If you personally want to contribute to stop global warming, the calculation and constant monitoring of your personal carbon footprint is essential.
【单选题】程序段G70 P1 Q2 F0.2中的G70含义是( )
【简答题】These days everyone is worried about the size of their carbon footprint. In order to reduce global warming we need to make our carbon footprints smaller. But how much CO 2 are we responsible for? A ne...
【判断题】无论什么数控系统。指令代码G71只用于轮廓粗车周定循环,而G70用于轮廓精车加工。()