问题
选择题
It is bad _____ to speak with your mouth full of food. [ ]
A. manner
B. way
C. method
D. manners
答案
答案：D
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It is bad _____ to speak with your mouth full of food. [ ]
A. manner
B. way
C. method
D. manners
答案：D
该时刻以后,质元a比质元b先到达平衡位置
该时刻以后的
周期内,质元a通过的路程为1m
该时刻以后的
周期内,质元b通过的路程比质元c通过的路程大
该时刻以后的
周期内,质元d通过的路程等于A