分解因式:16a2-9b2=______.
16a2-9b2=(4a+3b)(4a-3b).
Platypus is a strange animal that lays eggs but milk its young.
A.feeds;to
B.feeds;for
C.fed;at
D.fed;on
()具有物理强度高、防潮性能好、外观质量好等特点。
A.鸡皮纸
B.瓦楞纸
C.牛皮纸
D.玻璃纸