59×3×45,
=53×45,
=43(吨);
答:3台这样的磨面机45小时可以磨面43吨.
X线示出现骶髂关节侵蚀、间隙变窄或部分融合,此骶髂关节病变分级是()。
A.0级
B.Ⅰ级
C.Ⅱ级
D.Ⅲ级
E.Ⅳ级
Do please your work; you must concentrate on what is important for your future development.
A.refer to
B.adapt to
C.attend to
D.relate to