常用的涂层材料有()
A、WC
B、TiC
C、Al2O3
D、YT
E、TiN
参考答案:B, C, E
Overeating is one of the factors _____ his poor health. [ ]
A. leads to
B. resulting from
C. that results in
D. contributing to
腹膜的作用为()
A.分泌、吸收、修复、再生等功能
B.形成脏器的外膜
C.形成腹腔
D.形成不规则的潜在密闭间隙
E.形成腹膜腔