在单向偏心荷载作用下,若基底反力呈梯形分布,则偏心距与矩形基础长度的关系为()。
A.
B.
C.
D.
参考答案:A
—Stay a bit longer, please. It’s been such _______ fun having you here.
—Thank you, but I’ve got _______ early start tomorrow morning.
A./ ; the
B.a; an
C./; an
D.the; an
测得抽油机左、右两侧曲柄不水平度分别为28mm和30mm,曲柄长度为2400mm,水平尺长度为600mm,剪刀差为()。
A、-6mm
B、6mm
C、-8mm
D、8mm