试说明静电有哪些危害?

题型:问答题

问题:

试说明静电有哪些危害?

考点:石油石化技能考试海上油气生产作业试题海上油气生产作业试题题库
题型:问答题

化学与生活密切相关,下列食物中,主要为人体提供糖类的是(  )

A.大米

B.牛奶

C.蔬菜

D.花生

题型:问答题

局部使用治疗敏感细菌引起的各种皮肤和黏膜感染的药物是().

A.妥布霉素+哌拉西林 

B.庆大霉素+麦迪霉素 

C.庆大霉素+青霉素 

D.妥布霉素+氨曲南 

E.新霉素

题型:问答题
One Saturday afternoon, a six-year-old girl went for a walk. She crossed a large area of grassland into the woods __36__ she realized that she was lost.
Sitting on a rock and __37__ what to do, she began crying. After a while. she__38__ to walk along a wide path lined with tall trees and thick bushes. __39__ it was getting dark, she saw a small, dark wooden house. She opened the door and __40__ stepped in. Suddenly, she heard a strange noise, and she ran out the door and back to the __41__. Cold and tired, she fell asleep near a __42__.
The girl’s parents were out and her dog, Laddy, was at home. Laddy __43__ that his mistress was in danger. He jumped __44__ a window, breaking the glass. He looked in the fields. But he couldn’t find his mistress anywhere. However, from the ground came a __45__ scent (气味) as he lowered his head. He __46__ the scent and walked across the grassland. Barking __47__ into the air, the dog __48__ through the woods until he found the __49__ . But the girl was not there, so he headed back to the woods. Much to his __50__ , he saw his mistress’ blue shirt in the distance. He __51__ over some bushes and saw the little stream, where the girl was __52__.When she opened her eyes and    53   her dog standing beside her, the girl said, “you   54  me, Laddy,” and she kissed him several times. Seeing their daughter and dog coming back, the parents burst into tears of    55   . That night Laddy had a hero’s supper: a huge meal of steak
小题1:
A.sinceB. whileC.beforeD.as
小题2:
A.wonderingB.forgettingC.rememberingD.regretting
小题3:
A.preferredB. expected C.failedD.decided
小题4:
A.BecauseB.When C.IfD.Until
小题5:
A.hopelesslyB.carelessly C.cautiouslyD.unwillingly
小题6:A. trees     B. woods           C grasses.        D. bushes
小题7:
A.streamB.rockC.treeD.house
小题8:
A.heardB.foundC.sensedD.smelt
小题9:
A.atB.inC.ontoD.through
小题10:
A.familiar B.strangeC.terribleD.pleasant
小题11:
A.missed B.discoveredC.followed D.ignored
小题12:
A.calmly B.merrilyC. gently D.loudly
小题13:
A.wanderedB.lookedC.searchedD.travelled
小题14:
A.girlB.houseC. windowD.hero
小题15:
A.satisfactionB.disappointment C.embarrassmentD.delight
小题16:
A.jumpedB.climbed C.walkedD.flew
小题17:
A.awakeB.asleepC. abandoned D.available
小题18:
A.sawB.spotted C.observed D.watched
小题19:
A.disturbedB.comfortedC.rescuedD.scared
小题20:
A.painB.shockC. sorrowD.relief
题型:问答题

4个月小儿,人工喂养,平时易惊,多汗,睡眠少,近2日来咳嗽、低热,今晨突然双眼凝视,手足抽动。查体:枕后有乒乓球感。

患儿最可能是()

A.血糖降低

B.血清钙降低

C.血清镁降低

D.血清钠降低

E.脑脊液细胞数增多

题型:问答题

"俏色"指的是一种利用玉的天然色泽进行雕刻的工艺。这种工艺原来被认为最早始于明代中期,然而,在商代晚期的妇好墓中出土了一件俏色玉龟,工匠用玉的深色部分做了龟的背壳,用白玉部分做了龟的头尾和四肢。这件文物表明,"俏色"工艺最早始于商代晚期。  以下哪一项陈述是上述论证的结论所依赖的假设?

A."俏色"是比镂空这种透雕工艺更古老的雕刻工艺。

B.妇好墓中的俏色玉龟不是更古老的朝代留传下来的。

C.因势象形是"俏色"和根雕这两种工艺的共同特征。

D.周武王打败商纣王时,从殷都带回了许多商代玉器。

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