如果16﹣xn=(4+x2)(2+x)(2﹣x),则n的值是[ ]
A.5
B.4
C.3
D.2
答案:B
I’m sorry to have ______ you with too many questions on such an occasion.
A.resisted
B.touched
C.impressed
D.bothered
装饰薄木有几种分类方法,按结构形式分为()。
A、普通薄木和微薄木
B、旋切薄木、半圆旋切薄木、刨切刨木
C、径向薄木、弦向薄木
D、天然薄木、集成薄木和人造薄木