堆石坝垫层料的摊铺时，当压实层厚度大时，可采用( )卸料，以减轻物料的分离。
A. 自卸汽车后退法
B. 自卸汽车进占法
C. 自卸汽车后退法或进占法
D. 混合法
查看答案
Which of the following phrases in the fifth paragraph indicates the fridge's negative effect on the environment
A. "Hum away continuously".
B. "Climatically almost unnecessary".
C. "With mild temperatures".
D. "Artificially-cooled apace".
胃寒气逆所致干呕、哕，当选 ( )
A. 橘皮竹茹汤
B. 生姜半夏汤
C. 半夏干姜散
D. 橘皮汤
Why does the author say that nothing was wasted before the invention of fridges
A. people would not buy more food than was necessary.
B. Food Was delivered to people two or three times a week.
C. Food was sold fresh and did not get rotten easily.
D. People had effective ways to preserve their food.
What is the author's overall attitude toward fridges
A. Neutral (中立的).
B. Critical(批评、遣责的).
C. Objective.
D. Compromising (妥协的).
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