判断呼吸衰竭的指标是指安静状态下呼吸空气时PaO2测定值小于()。
A.20mmHg
B.30mmHg
C.40mmHg
D.50mmHg
E.60mmHg
参考答案:A
涪陵重百商场有两个进价不同的计算器都卖120元,其中一个赢利20%,另一个亏本20%,在这次买卖中,重百商场( )
A.不赔不赚
B.赚了10元
C.赔了10元
D.赚了50元
____ what I had previously thought, my new deskmate turned out to be a very interesting guy.
A.Instead of
B.In spite of
C.Contrary to
D.Because of