一般来说，随着服务水平的提高，投入成本将加速增长，即边际成本递增。也就是说将按时交货率从94%提高到98%的边际成本要小。
参考答案：对
阅读短文判断对错，对的画()错的画()。
Today my family go shopping. We take a taxi to the shop. The shop is far and big. In the shop, the
women and men walk slowly. The children walk quickly. My mother buys a gift for me. My father buys a
camera. I have a sister and a brother. My brother is one year old. He learns to walk. It's hard for him to
walk. My mother helps him.
( ) l. They walk to the shop.
( ) 2. The people in the shop walk slowly.
( ) 3. My father buys film.
( ) 4. My brother is too young to walk.
( ) 5. There are five people in the family.
wood2000中，使用“字体”对话框不能设置（ ）
A．字符颜色
B．文字底纹
C．空心文字
D．字形
)错的画(
)。