A：斧底抽薪循私舞弊突如奇来甜言蜜语
B：板上走丸长备不懈一劳永逸流芳百世
C：明察暗访和颜悦色待价而沽怨天尤人
D：尾大不调兵荒马乱珠联璧合优哉游哉
at the time, a pack of, help out, in the meantime, be terrified of, yell out, sort out, ahead of, aim at, in time
关于重力做功和物体的重力势能，下列说法不正确的是（ ）
