不使用支柱起脊装载时，每垛（捆）管材需用（）或钢丝绳下压式捆绑，层间衬垫防滑。
参考答案：钢带
The children all turned _____ the famous actress as she entered the classroom. [ ]
A. looked at
B. to look at
C. to looking at
D. look at
硫酸阿托品倍散属于（）
A.含毒性成分的散剂
B.含低共熔成分的散剂
C.眼用散剂
D.多剂量型散剂
E.含液体成分散剂
