固体物料的输送机械可分为（）和（）两类。

已知a是实数，函数f（x）=x²（x-a）．

（Ⅰ）若f′（1）=3，求a的值及曲线y=f（x）在点（1，f（1））处的切线方程；

（Ⅱ）求f（x）在区间[0，2]上的最大值．

土地价格是以土地使用权出让、转让为前提，一次性支付的多年地租的现值总和。( )

有关血尿的概念不正确的是（）

A.肉眼血尿一般略浑浊

B.肉眼血尿离心后上清液无色或淡黄色透明

C.血尿尿沉渣检查红细胞>5个／高倍视野

D.假性血尿有可能是月经污染

E.血尿可以分为肉眼血尿和镜下血尿

经营者销售或者购买商品时，经营者

A．可给对方折扣

B．给中间人佣金

C．必须如实入帐

D．支付对方折扣、中间人佣金的和接受折扣、佣金的，都必须如实入帐

E．接受折扣、佣金的必须如实入帐

DOM is a platform-and language- (11) API that allows programs and scripts to dynamically access and update the content, structure and style of WWW documents (currently, definitions for HTML and XML documents are part of the specification). The document can be further processed and the results of that processing can be incorporated back into the presented (12) . DOM is a (13) -based API to documents, which requires the whole document to be represented in (14) while processing, it. A simpler alternative to DOM is the event-based SAX, which can be used to process very large (15) documents that do not fit info the memory available for processing.

A．text

B．image

C．page

D．graphic