在空分装置中,蒸汽冷凝和液体蒸发的过程是两个相反的过程,但都是()
A.质到量变
B.质到质变
C.量到质变
参考答案:C
六、选词填空(5*1=5分)
be suitable for put up with even if be opposed of burn to the ground
71. Many old men ________________cutting down the 100-year-old tree for rebuilding a shopping center.
72. __________ there was a risk of being killed, the nurses went to save the injured in the earthquake.
73. We can’t _______________ the smell coming from the river behind our school.
74. In the fire, all his furniture was ___________________.
75. In terms of the weather, it ______________ us to go out for a picnic today.
“低碳”是一种生活理念,也是一种生活态度。下列做法:①广泛使用一次性塑料袋购物; ②开发无污染的太阳能、风能、地热能等;③使用可降解塑料;④大量使用化石燃料;⑤焚
烧垃圾发电;⑥提倡使用节能技术和节能产品,不符合“低碳”要求的是
A.①③⑤
B.①④⑤
C.②④⑥
D.②③⑥