SMA面层的碾压可以采用振动压路机,但要避免粗集料碾碎和泛油现象发生。( )
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A new report suggests that chewing gum may be a health h______(危险,危害).
He studied philosophy and p______(心理学) at Yale.
Doing it properly makes c______(相当大的,相当重要的) demands on our time.
The i______(强烈,剧烈) of the work left little room for personal grief or anxiety.