前伸咬合时后牙干扰的原因可能为() A.前牙深覆 B.牙列重度磨耗 C.牙列Spee

题型:单项选择题

问题:

前伸咬合时后牙干扰的原因可能为()

A.前牙深覆

B.牙列重度磨耗

C.牙列Spee曲线曲度过小

D.横曲线曲度过大

E.上前牙过度前倾

考点:口腔颌面外科(医学高级)口腔颌面外科综合练习口腔颌面外科综合练习题库
题型:单项选择题

有8个外观一样的彩球,其中有一个是次品,次品比正品略轻一些.用天平,不用砝码,需要称几次能保证找出次品?

方法之一:

(1)把天平两边各放4个彩球,次品在较轻的一边;

(2)把较轻一边的4个球,再分成两组放在天平两边,次品在较轻的一边:

(3)把较轻一边的2个球分别放在天平两边,较轻的一边是次品.这样需要称3次.

方法之二:

如果把这8个彩球分成3个、3个、2个三组,先在天平两边各放3个:

(1)如果天平平衡,说明次品在没称的2个里面,再称一次就可以找出次品;

(2)如果一侧较轻,在较轻的一侧取出2个,放在天平两边,如果平衡,没称的那个就是次品;如果不平衡,较轻的一个就是次品.这样只需称2次.

题型:单项选择题

女性,22岁,左肺结核,咯血后出现胸闷、气短,查体左下肺呼吸音减弱,可能为()
男性,43岁,3年前患肺结核,抗结核治疗1年,病变吸收好转,痰菌阴转,近3个月来出现间断小量咯血,查痰结核菌阴性,X线胸片双上肺野纤维条索影,患者咯血的原因可能为()

A.肺不张

B.吸入性肺炎

C.结核性支气管扩张

D.支气管扩张

E.支气管肺癌

题型:单项选择题

为“血中气药”,能“上行头目,下调经水”的是()。

A.川芎

B.延胡索

C.姜黄

D.莪术

E.郁金

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.

19()

A.made 

B.searched 

C.bought 

D.fetched

题型:单项选择题

肝破裂合并开放性气胸的处理原则首先是

A.输血

B.剖腹探查止血

C.补液

D.应用抗生素

E.处理气胸

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