A．(68)copies a photograph，drawing or page of text into the computer．

A．scanner

B．printer

C．display

D．keyboard

[主观题]D．irections: Study the following drawing carefully and write an essay in which you should1) describe the drawing.2) interpret its meaning, and.3) support your view with examples. You should write about 200 words neatly on ANSWER SHEET 2.(20 points)

[单选题]analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the(72)for designing and constructing an improved system.(73)is such a technique. The emph

[单选题] （71） analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the （72） for designing and constructing an improved system. （73） is such a technique

[判断题]An air waybill usually contains 10 sheets，3 fororiginal，6 for copies and 3

[判断题]An air waybill usually contains 10 sheets，3 fororiginal，6 for copies and 3

[单选题]The(75)page is the introductory page of a set Web pages．A．FirstB．HomeC．HeadD．Host

[单选题]PAGE( )。A．醋酸纤维膜电泳B．琼脂免疫电泳C．对流免疫电泳D．火箭电泳E．聚丙烯酰胺凝胶电泳

[单选题]PAGEA．醋酸纤维膜电泳B．琼脂免疫电泳C．对流免疫电泳D．火箭电泳E．聚丙烯酰胺凝胶电泳

[单选题]PAGE()。A.醋酸纤维膜电泳B.琼脂免疫电泳C.对流免疫电泳D.火箭电泳E.聚丙烯酰胺凝胶电泳

[单选题]PAGE()。A.醋酸纤维膜电泳B.琼脂免疫电泳C.对流免疫电泳D.火箭电泳E.聚丙烯酰胺凝胶电泳