( )时期,我国园林艺术日臻精进,出现了一批造园专著。
A.隋唐B.明清C.宋元D.秦汉
参考答案:B
—What do you think of John?
—He’s a good boy, but he ______ be really stubborn at times.
A.can
B.might
C.must
D.need
锚杆挡土墙锚孔注浆注浆管应随水泥砂浆的注入逐渐拔出,注浆压力一般为()MPa。
A、0.2
B、0.3
C、0.5