局麻药溶液中加用肾上腺素的目的是()
A.提高血内局麻药浓度
B.加快局麻药的吸收速率
C.延长局麻药阻滞的时效
D.减少腺体分泌以防误吸
E.增加腺体分泌
参考答案:C
Great as Newton was, many of his ideas_____today and are being modified by the work of scientists of our time.
A.are to challenge
B.have challenged
C.are challenging
D.have been challenged
我国管理和调节人民币汇率的机构是( )
A.国务院
B.中国人民银行
C.银监会
D.中国银行