航运公司通常按ISO9000标准要求建立质量管理体系,并要求按()的标准对其进行认证。
A、ISO9001
B、ISO9002
C、ISO9003
D、ISO9004
参考答案:B
弥漫性血管内凝血
With a lot of difficult problems () , the manager felt worried all the time.
A. settled
B. to be settled
C. settling
D. to settle