下面哪一种漂白方式对纤维的损伤最小()
A、次卤酸钠
B、双氧水
C、亚卤酸钠
参考答案:C
Fill in the blanks. 用所给词的适当形式填空。
Look at this picture. It's very beautiful. The (leaf) are green. The ( flower) are red. There
are many ( people) on it. Some ( man) are playing (card) under the tree. Some
(child) are flying (kite) and three (woman) are drawing. There! A (baby) is sleeping on the
( grass).
普通水泥混凝土的抗拉强度比抗压强度( )。
A.略高 B.略低 C.高得多 D.低得多