氢氧化钠溶液长期暴露在空气中会逐渐变质,这一变化的化学方程式为______;检验

题型:填空题

问题:

氢氧化钠溶液长期暴露在空气中会逐渐变质,这一变化的化学方程式为______;检验氢氧化钠是否变质,可选用的试剂是______.如果已经变质,加入试剂时发生的现象是______.有关的化学方程式为______.

考点:化学反应方程式的书写文字表达式碱的性质盐的性质
题型:填空题

色谱方法的种类很多,并且各类方法的原理、操作也不尽相同,但由不同方法检测得到的色谱图却是大同小异。色谱图的纵坐标为检测器的相应信号,横坐标通常为流出物流出时间。

定量分析通常采用色谱图中的参数是()

A.色谱峰

B.区域宽度

C.面积

D.基线

E.保留值

题型:填空题

★ Help Wanted

PAINTER

Must have at least 3 years painting experience. Commercial and new construction work. $10/hr. Immediate opening. Call 435-9201 with work history.

SECRETARY

Part time position available in friendly, busy office. Good typing and general office skills. Some

weekends required. High pay. Various duties. Apply (申请) at East Side Management, 500 Park Drive, Dewitt, NY. 13214.

★ Help wanted

VET ASSISTANT

Person needed for busy animal hospital. Some nights and weekends. Apply in person to Johnson Marks Animal Hospital, 404 Snow Road, Syracuse, NY 13224. After 4 p.m. only please.

NURSES' ASSISTANTS

Fulltime and part time positions available for modern nursing home. High pay. Call Mrs. Downes, R.N. at 543 7618.

★ Help Wanted

COOK NEEDED

Immediately. Busy downtown restaurant. Must be good and dependable. Experience preferred. Weekends required. Call 324-9817.

SALESPERSON

Experienced. Must have some knowledge of men's clothing industry. Available to work evenings and some Saturdays. Send resume (简历) to: Martin Apparel, 237 Rockledge St., Syracuse, NY. 13224.

★ Help Wanted

TEACHER

Small private school needs English and maths teachers. Must have BS degree and at least 4 years teaching experience. Send resume to: Wales Charter School 19 South 8th  St. NY. 13224.

HOTEL

Needs part time FRONT DESK CLERK No experience necessary. Excellent people and phone skills a must. Some computer skills helpful. $13/hr. Call: Mr. Jones 357-2897.

小题1: If you wanted to get a job as a maths teacher, send your resume to        .

A.237 Rockledge St. ,Syracuse, NY.13224

B.404 Snow Road Syracuse, NY. 13224

C.500 Park Drive, DeWitt, NY. 13214

D.Wales Charter School 19 South 8th St.NY. 13214小题2: If you dislike working on Sundays, being a        should be your best choice.

A.cook

B.secretary

C.salesperson

D.vet assistant小题3:If you want to get a job at       , you must have office skills.

A.Martin Apparel

B.East Side Management

C.Wales Charter School

D.Johnson Marks Animal Hospital

题型:填空题

关于无菌物品的储藏,叙述正确的有()。

A.无菌物品不可放在水槽、水管周围及任何有水的地方,以免受潮污染

B.清洁工作要保持湿式清扫,避免扬尘

C.储物架及运送车要保持干净

D.储存的物品应至少距地面10cm,距天花板20cm,距墙壁5cm

E.储存的环境内严格限制人员的流动

题型:填空题

“风雨送春归,飞雪迎春到。已是悬崖百丈冰,犹有花枝俏。俏也不争春,只把春来报。待到山花烂漫时,她在丛中笑。”毛 * * 的这首《卜算子.咏梅》以生动的文学艺术形式()

①表达了中 * * 向往和平的美好追求

②抒发了中华儿女自强不息的乐观情怀

③体现了科学理论武装人的价值引领

④迸发出优秀作品鼓舞人的感召力量

A.②④

B.①③

C.①④

D.②③

题型:填空题

船体采用高强度结构钢的特点是:()

(1)船体重量减轻;

(2)船舶载重量增大;

(3)船体强度高,所用钢材少;

(4)焊接工艺复杂

A.(1)(2)(3)

B.(2)(3)(4)

C.(1)(3)(4)

D.(1)(2)(3)(4)

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