明胶与银离子相互作用,生成一种不稳定的银胶络合物。明胶加热时该络合物分解,生成了银及

题型:单项选择题 A3/A4型题

问题:

明胶与银离子相互作用,生成一种不稳定的银胶络合物。明胶加热时该络合物分解,生成了银及硫化银,它们聚集在溴化银晶体的缺陷和位错的部位上,构成了感光中心。明胶能吸收卤化银在感光时产生的卤原子,以防止卤原子与银原子的重新化合,因而相对地提高了感光度。明胶可以包围卤化银晶体,使它们彼此不直接接触,并能均匀涂布在片基上,不沉淀、不结块,保护了未感光卤化银晶体不被显影。明胶膨胀后具有多孔性,可使较小分子通过。明胶具有热熔冷凝的特性。明胶黏性很强,使乳剂牢固地黏着在片基上。明胶参与坚膜作用。

下列明胶叙述错误的是()

A.明胶能提高感光度

B.明胶是吸卤剂

C.明胶不参与坚膜作用

D.明胶热熔冷凝

E.明胶可保护未感光卤化银

考点:放射医学技术(士)医学影像照片处理技术医学影像照片处理技术题库
题型:单项选择题 A3/A4型题

某工程项目施工过程中,监理人对已同意承包人覆盖的隐蔽工程质量有怀疑,指示承包人进行重新检验。检验结果表明该部分施工质量未达到合同约定的质量标准,但满足行业规范的要求。下述说法正确的有( )

A.承包人有权拒绝监理人重新检验的要求

B.监理人应判定质量合格

C.承包人损失的工期和费用均不予补偿

D.承包人应自费对该部分进行修复

E.应补偿承包人费用,但工期不顺延

题型:单项选择题 A3/A4型题

血气分析标本如果接触了空气,则()

A.PCO2下降

B.PCO2升高

C.pH下降

D.pH不变

E.不能确定

题型:单项选择题 A3/A4型题
When I was twelve years old, my father took me to see Zig Zigler. I remember sitting in that dark hall listening to Mr. Zigler   41    everyone’s spirits up to the ceiling. I    42    there feeling like I could do anything. When we got to the car, I turned to my father and said, “Dad, I want to    43    people feel like that.” My father asked me what I meant. “I want to be a motivational speaker just like Mr. Zigler,” I replied. A (An)    44    was born.
Recently, I began seeking my dream of motivating others.    45    a four-year relationship with Fortune 100 Company   46    as a sales-trainer and ending as a regional sales manager, I left the company at the height of my    47  . Many people were surprised that I would leave after earning a six-figure income. And they asked why I would risk everything for a dream.
I made my    48    to start my own company and leave my secure position after    49    a regional sales meeting. The vice-president of our company delivered a speech that changed my life. He asked us, “If a god would offer you three wishes, what would they be?” After giving us a (an)     50     to write down the three wishes, he then asked us, “Why do you need a    51   ?” I would never forget the power I felt at that moment. I realized that   52    I accomplished in the past had prepared me for this moment. I was ready and didn’t need a god’s help to become a motivational speaker. A motivational speaker was born.
Having made that decision, I was immediately    53   . One week after I handed in my notice (辞职信), my husband was laid off from his job, and now we had no    54   . But I held fast to my dream. The wonder really began to happen. In a short time my husband found a better job. And I was able to book several    55   engagements with new customers. I discovered the incredible power of dreams.
小题1:
A.riseB.blowC.put D.raise
小题2:
A.leftB.came C.arrivedD.slipped
小题3:
A.get B.hope C.make D.cheer
小题4:
A.idea B.dreamC.girl D.speaker
小题5:
A.After B.Before C.Because D.While
小题6:
A.beginning B.working C.actingD.regarding
小题7:
A.life B.love C.income D.career
小题8:
A.plan B.promise C.decision D.mind
小题9:
A.attending B.joining C.entering D.holding
小题10:
A.dayB.minute C.week D.hour
小题11:
A.helpB.job C.god D.company
小题12:
A.everything B.anything C.nothing D.something
小题13:
A.examined B.searched C.checked D.tested
小题14:
A.help B.harm C.income D.money
小题15:
A.selling B.speaking C.writing D.listening
题型:单项选择题 A3/A4型题

采用锤击沉管灌注桩施工时,一般不采用()方法。

A.反打法

B.单打法

C.复打法

D.反插法

题型:单项选择题 A3/A4型题

秋燥一般分为(),()两类,前者治宜()法,后者治宜()法。

更多题库