斜吊会使重物产生摆动,引起()直接导致起重机失稳。
A.离心力
B.惯性力
C.重力
D.拉力
参考答案:B
-- Could you give these books to Mr. Mackintosh?
-- Certainly, ______ him about something else in any case, so it won’t be any bother.
A.I saw
B.I see
C.I can see
D.I’ll be seeing
碗扣式钢管脚手架采用每隔06m设l套碗扣接头的定型立杆和两端焊有接头的定型横杆,并实现杆件的系列标准化。()