支气管肺炎一般用鼻前庭导管氧流量为
A.0.25~0.5L/min
B.0.5~1L/min
C.1~2L/min
D.2~3L/min
E.3~4L/min
参考答案:B
The young man suddenly returned __ a rainy night.
A.at
B.in
C.during
D.on
梁支座处设置多排弯起筋抗剪时,若满足了正截面抗弯和斜截面抗弯,却不满足斜截面抗剪,此时应在该支座处设置如下钢筋()。
A.浮筋
B.鸭筋
C.吊筋
D.支座负弯矩筋