The HSR building boom continues with the HSR network set to reach 38,000 km in 2025.

中国大学MOOC: China’s HSR accounts for 1/5 of the world’s total high-speed railway networks.

中国大学MOOC: The HSR building boom continues with the HSR network set to reach 38,000 km in 2025.

Chinas HSR accounts for ______of the worlds total high-speed

1. HSR is a type of passenger rail transport that operates faster than the normal speed of rail traffic.

The ________ is the first network of high-speed railway lines in the world. A: ICE B: TGV C: HSR D: Shinkansen

八纵八横的英文是( ) A: The 8+8 lines B: The 8+8 HSR grid C: 8 plus 8 lines D: 8 plus 8 grid

用（）来稀释进入P3008A/B泵的催化剂淤浆，这样可以使催化剂在泵内的磨损最小。 A: LSR B: HSR C: LIR D: HPSR

在[tex=2.143x1.071]TDANWd8SjvlBgKfth1Nijw==[/tex]时，某气体的状态方程可以表示为[tex=7.214x1.429]j8IPFqfC1AOU12cEW5IF6j41frCREywTJMoXIhNJ0kE=[/tex],在[tex=2.143x1.071]TDANWd8SjvlBgKfth1Nijw==[/tex]，[tex=3.143x1.0]hsR5XJFWOTZsqvruxifXHw==[/tex]时将气体进行节流膨胀，问膨胀后气体的温度是上升还是下降? 

【单选题】要指定一个绝对位置 5 , 5 的点,应该输入: () @5 , 5 5 》 5 5 , 5 5<5< span=""> A. @5，5 B. 5》5 C. 5，5 D. 5<5