涤纶化纤面料的衣服好象冬天穿了容易起静电?
参考答案:
它是属一般的化学纤维,易起静电,以洗尘,易脏,但是也易洗
There are two rooms on the first floor, _____ is used as a guest room .
A.a smaller of which
B.a smaller of them
C.of which the smaller
D.the smaller of them
关于可摘局部义齿基托伸展的范围,下列哪项是错误的()
A.义齿基托边缘应与天然牙轴面的倒凹区轻轻接触
B.上颌远中游离者,义齿基托应伸至翼上颌切迹,远中颊角应覆盖上颌结节
C.下颌远中游离者,义齿基托应覆盖磨牙后垫前1/3~1/2
D.缺牙区若有骨质缺损,义齿基托伸展的范围应当扩大,若有骨突应适当缩小或作缓冲
E.缺牙多应适当大些,反之应小些