标准气钢瓶长期搁置未用或由于周围环境温度()等因素,也可能使钢瓶内气体产生分层现象。

题型:单项选择题

问题:

标准气钢瓶长期搁置未用或由于周围环境温度()等因素,也可能使钢瓶内气体产生分层现象。

A、太高

B、过低

C、变化大

D、骤然升高

考点:在线分析仪表工在线分析仪表初级工在线分析仪表初级工题库
题型:单项选择题

若甲烷在203K,2533.1kPa条件下服从范德华方程,则摩尔体积为()m3•mol-1.(a=2.283×10-1Pa•m6•mol-2,b=0.4728×10-4•m3•mol-1)

A.5.606

B.5.606×10-3

C.5.606×10-4

D.5.6×10-4

题型:单项选择题

我能读懂这些句子,给下面的句子选出正确的说法。   

1.“如果把眼前的这一池荷花看作一大幅活的画,那画家的本领可真了不起。”     

这句话中的“画家”是  [ ]

A.园丁   

B.绘画人员   

C.大自然   

2.“小鱼在脚下游过,告诉我昨夜做的好梦……”句子中的省略号表示    

[ ]

A.小鱼的话没说完   

B.还有许多的想象     

C.梦突然醒来

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题型:单项选择题

下列有关颊系带的描述哪项是正确的

A.是舌下的黏膜小皱襞

B.是前庭沟中线上线形的黏膜小皱襞

C.是前庭沟中线上扇形或线形的黏膜小皱襞

D.是前庭沟相当于上、下尖牙或前磨牙区的扁形黏膜皱襞

E.是前庭沟相当于上、下尖牙或前磨牙区的线形黏膜皱襞

题型:单项选择题

I was a single parent of four small children, working at a low paid job. Money was always tight, but we had a (1) over our heads, food on the table, clothes on our backs, and if not a lot, always (2) . Not knowing we were poor, my kids just thought I was (3) . I’ve always been glad about that.

It was Christmas time, and although there wasn’t (4) for a lot of gifts, we planned to celebrate with a family party. But the big (5) for the kids was the fun of Christmas (6) .

They planned weeks ahead of time, asking (7) what they wanted for Christmas. Fortunately, I had saved MYM120 for (8) to share by all five of us.

The big (9) arrived. I gave each kid a twenty-dollar bill and (10) them to look for gifts of about four dollars each. Then everyone scattered. We had two hours to shop; then we would (11) back at the "Santa’s Workshop"

Driving home, everyone was in high Christmas spirits, (12) my younger daughter, Ginger, who was unusually (13) She had only one small, flat bag with a few candies—fiftycent candies I was so angry, but I didn’t say anything (14) we got home. I called her into my bedroom and closed the door, (15) to be angry again. This is what she told me.

"I was looking (16) thinking of what to buy, and I (17) to read the little cards on the ’Giving Trees’. One was for a little girl, four years old, and all she (18) for Christmas was a doll. So I took the card off the tree and (19) the doll for her. We have so much and she doesn’t have anything. "

I never felt so (20) as I did that day.

7()。

A.busy 

B.serious 

C.strict 

D.kind

题型:单项选择题

关于口腔术后营养支持描述不正确的是()。

A.颌面部骨折固定术需要较长时间的口腔固定治疗者,应该给予高能量、高蛋白和高脂饮食

B.骨折术后,随着骨伤的愈合,可以逐渐增加食物的硬度,一般在1个月内不宜咀嚼过硬的食物

C.颌面部软组织损伤的患者可以采用吸管或流质饮食

D.对于恶性肿瘤的患者还应该检测代谢变换

E.对于唇裂患者需要鼻胃管供给流质饮食,待伤口愈合后逐渐改为半流质和软饭

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