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问题 单项选择题

男性，50岁，肺癌术后化疗，经过几天化疗病人感到乏力。

当白细胞降至多少应处理

A．3×109/L

B．3×108/L

C．4×108/L

D．4×107/L

E．3×107/L

答案

参考答案：A

选择题

下列词语中加点的字注音全部正确的一组是（    ）

A．札记（zhá）玉笏（hù）肄业（sì）戛然而止（jiá）

B．土坯（pī）檄文（xí）蕴藉（jiè）相形见绌（chù）

C．记载（zǎi）憎恶（zèng）付梓（zǐ）万头攒动（cuán）

D．监生（jiān）譬如（pì）吮吸（shǔn）锱铢必较（zī）
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单项选择题 共用题干题

The traditional model for systems development was that an IT department used (1) which is a process-centered technique, and consulted users only when their input or approval was needed. Compared with traditional methods, many companies find that JAD allows key users to participate effectively in the (2). When properly used, JAD can result in a more accurate statement of system requirements, a better understanding of common goals, and a per commitment to the success of the new system. RAD is a team-based techruque that speeds up information systems development and produces a functioning information system. While the end product of JAD is a(an) (3), the end product of RAD is the (4). The RAD model consists of four phases. During the (5), users interact with systems analysts and develop models and prototypes that represent all system processes, outputs, and inputs.

空白（5）处应选择（）

A.requirements planning phase

B.user design phase

C.construction phase

D.cutoverv phase
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