强度试验的试验压力，一般动力管道为工作压力的（）倍，不得小于工作压力加0.3Mpa。
参考答案：1.25
More than 20 people ________ in traffic accidents ________ last May.
A．died; for
B．have been dead; since
C．have died; for
D．have been dead, for
住宅起居室、卧室和厨房应有直接采光，且窗地面积比不小于（）。
A.1/5
B.1/6
C.1/7
D.1/8
