在Z中若(a,c)=1,(b,c)=1,则可以得出哪两个数是素数?()
A、(abc,a)=1
B、(ac,bc)=1
C、(abc,b)=1
D、(ab,c)=1
参考答案:D
There are_________ floors in this shopping mall. KFC is on the_________ floor.
A.five; five
B.five; fifth
C.fifth; fifth
D.fifth; five
钢木屋架园钢接长宜用()。
A.对接
B.单绑条焊
C.双绑条焊