地壳(crust)
参考答案:
0—33km,大陆型地壳(Si—Al层)以花岗岩为代表;大洋型地壳(Si—Mg层),以玄武岩为代表。
She had just finished her homework_____her mother asked her to practice playing the piano yesterday. [ ]
A. when
B. while
C. after
D. since
多角度、多方位的质量管理是()。
A.护理业务技术管理
B.TQC管理
C.目标管理
D.环节质量管理
E.终末质量管理