龋齿的发病特点是牙体硬组织呈A.急性间歇性破坏B.急性进行性破坏C.慢性间歇性破坏D

题型:单项选择题

问题:

龋齿的发病特点是牙体硬组织呈

A.急性间歇性破坏
B.急性进行性破坏
C.慢性间歇性破坏
D.慢性进行性破坏
E.持续性脱矿

考点:口腔执业医师口腔执业医师
题型:单项选择题
设向量
a
=(3,5,-4),
b
=(2,1,8)
,计算
a
b
以及
a
b
所成角的余弦值,并确定λ和μ的关系,使λ
a
b
与z轴垂直.
题型:单项选择题

Mr. and Mrs. Smith have just opened a small restaurant. In order to attract customers, they put a notice in front of the restaurant, which said: “Meals on the house for three days.”

A foreign student who didn’t know much English passed by the restaurant on the second day. It was lunchtime and he felt hungry. “Well, here is a restaurant. I’m going to have something to eat,” he said.

He saw the notice when he walked towards the restaurant. “American people are really strange. They even eat dinners on the house! But how can I get onto the top of the house?” he asked himself.

He looked around and found a ladder(梯子)against a tree nearby. He was very glad. But as he reached the top, he heard someone shouting at him: “Hey, what are you doing up there?” Mr Smith was looking at him angrily. Beside him was a policeman.

“Doesn’t your notice say ‘Meals on the house for three days’? Is it just a joke?” the foreign student answered.

On hearing this, both Mr Smith and the policeman burst into laughter(开怀大笑). “Do you know what On The House means?”

Do you know the meaning of On The House?

小题1:The Smiths have ____________.

A.opened a restaurant

B.built a house

C.climbed onto the top

D.been policemen小题2:The student walked past the restaurant ___________.

A.when the Smiths started their business

B.when the Smiths put on the notice

C.when the policeman came to the restaurant

D.when it was time to have lunch小题3:The student ____________ so Mr Smith shouted at him.

A.was very hungry

B.knew little about English

C.climbed onto the top of the house

D.took away the ladder小题4:“On the house” may mean that the meal _____________.

A.is had on the house

B.is paid on the house

C.is made on the house

D.is free for the customers

题型:单项选择题

女性,45岁,右 * * 胀痛已4年余,月经前显著,行经后胀痛缓解,近期症状加重,月经前后均感胀痛且自感触及肿块。

如果该病人在右 * * 扪及肿块,下列哪项辅助检查对诊断最有价值()

A. * * 钼靶X线摄片

B.红外线热图像检查

C.活组织切片检查

D.B超检查

E. * * 溢液涂片检查

题型:单项选择题
a-b
2
x(x+3)
x
5+x
π
a+b
a-b
a+
1
m
中,是分式的有(  )
A.1个B.2个C.3个D.4个
题型:单项选择题

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