腰麻后去枕平卧6小时是为了()
A.防止呕吐后误吸
B.减轻伤口疼痛
C.防止术后脑缺血
D.防止术后低血压
E.防止术后头疼
参考答案:E
To play the latest game, I’m planning to change my old computer for ___ that runs faster.
A.the one
B.that
C.which
D.one
细骨料是指粒径小于()的岩石颗粒。
A.3.25mm
B.4.75mm
C.5.45mm
D.7.25mm