抢救急性肺水肿患者加压吸氧时,湿化瓶内的乙醇浓度是
A.10%一20%
B.20%~30%
C.30%一40%
D.40%~50%
E.50%~70%
参考答案:B
John has really got the job because he showed me the official letter _____ him it.
A.offered
B.offering
C.to offer
D.to be offered
不属于个人资产配置中的产品组合是()。
A.储蓄产品组合
B.消费产品组合
C.投资产品组合
D.投机产品组合