民用建筑内,变压器室之间、变压器室与配电室之间应采用耐火极限不低于()的不燃烧体墙隔开。
A.3.0h
B.2.5h
C.2.0h
D.1.5h
参考答案:C
Joining the firm as a clerk,he got rapid promotion, and ____ as a manager. [ ]
A. ended up
B. dropped out
C. came back
D. started off
银行承兑汇票是( )工具。
A.信用衍生
B.资本市场
C.利率衍生
D.货币市场