在同一个墩、台的桩基中,同一水平面内的桩的接头数不得超过基桩总数的( ),但是按等强度设计的法兰盘接头可不受此限制。
A.1/2
B.1/3
C.1/4
D.1/5
参考答案:C
一栋大楼高30米,在某一时刻,大楼的影子长15米,一身高1.80米的人,应站在距大楼多远的范围内,太阳才照不到他?
___________Mrs Smith worked day and night, he found it difficult to make enough money to support such a large family.
A.Since
B.If
C.Once
D.Although