下述关于覆覆盖意义说法错误的是()
A.保持牙列完整
B.提高了咀嚼效能
C.扩大了咀嚼面积
D.保护舌侧软组织
E.保护唇、颊粘肌
参考答案:A
_____ full preparations, we decided to put off the party till next week. [ ]
A. We did not make
B. Having not made
C. We had not made
D. Not having made
《全国汽车维修行业行为规范公约》中“文明生产,保护环境”一条对作业现场未提出明确要求。()