（）质量验收包括观感质量验收。 A.检验批 B.单位工程 C.分项工程 D.分部工程

下列哪种药物可被水解()

A.青霉素钠

B.环磷酰胺

C.氢氯噻嗪

D.吡哌酸

E.布洛芬

Although custom prosthetic bone replacements produced through a new computer-aided design process will cost more than twice as much as ordinary replacements, custom replacements should still be cost-effective. Not only will surgery and recovery time be reduced, but custom replacements should last longer, thereby reducing the need for further hospital stays.
Which of the following must be studied in order to evaluate the argument presented above

A．The amount of time a patient spends in surgery versus the amount of time spent recovering from surgery.

B．The amount by which the cost of producing custom replacements has declined with the introduction of the new technique for producing them.

C．The degree to which the use of custom replacements is likely to reduce the need for repeat surgery when compared with the use of ordinary replacements.

D．The degree to which custom replacements produced with the new technique are more carefully manufactured than are ordinary replacements.

E．(E) The amount by which custom replacements produced with the new technique will drop in cost as the production procedures become standardized and applicable on a larger scale.

下列有关金属冶炼的说法中，不正确的是                                                    （   ）

A．用电解熔融氯化钠的方法得到活泼金属钠

B．在加热的情况下利用氢气还原三氧化二铝得到金属铝

C．用铝热反应原理炼得熔点较高的金属铬

D．热分解法直接加热HgO得到金属Hg

试述当今人力资源管理面临的挑战。

文化具有非常丰富的形式。下列现象属于文化范畴的是（）

①中国特色社会主义理论

②我国古代四大名著

③方兴未艾的物联网技术

④巍然耸立的喜马拉雅山

A.①②④

B.②③④

C.①②③

D.①③④