下列印刷用纸中,适用于书刊封面的是()。
A.字典纸
B.书皮纸
C.铜版纸
D.铸涂纸
E.新闻纸
参考答案:B, C, D
解析:本题考查印刷用纸的种类。
阅读下面图示,完成短文,每空词数不限 (每空1分,共5分)
Here are the steps for___________________ hand wash!
First, wet your hand with water. Then put some soap on your hands. And lather(形成皂沫)at least 15 seconds. _________________________, rinse your hands______________________ Dry _________________________ with some paper towel or a hand dryer. Finally, please________________________ to turn the taps off with towel
下颌下腺炎常见的原因是()
A.牙槽脓肿
B.淋巴结炎
C.结石阻塞导管
D.冠周炎
E.血源性感染