合金嵌体窝洞制备时,需形成洞缘斜面,其目的是()A.增加抗力,防止游离牙釉柱折断;

题型:单项选择题

问题:

合金嵌体窝洞制备时,需形成洞缘斜面,其目的是()

A.增加抗力,防止游离牙釉柱折断;

B.增加固位力,防止脱位;

C.增加覆盖面积,增强力;

D.增加密合度,增强力;

E.增强密合度,防止侧向脱位。

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题型:单项选择题

I was being interviewed by a senior manager for a major insurance(保险业)company. I told him honestly why I wanted the job —I needed to keep my family in Boston. My wife recently died of a heart attack. A job in Boston would help me reduce some of the extreme trauma(精神创伤) and pain of the loss for my 16-year-old daughter. It was important for me to keep her in her present high school. I could still hardly talk about the loss of my wife. Bruce, the interviewer, was politely empathetic, but he didn’t probe(彻底调查) any further. He admitted (接受)my loss and, with great respect, moved on to another subject. After the next round of the interview, Bruce took me to lunch with another manager. Then he asked me to take a walk with him. He told me that he, too, had lost his wife. And, like me, he had also been married 20 years and had three children. In his sharing, I realized that he had experienced the same pain as I had —a pain that was almost impossible to explain to someone who had not lost a beloved one. He offered his business card and home phone number and suggested that, if I need help or just want someone to talk to, I should feel free to give him a call. Whether I got the job or not, he wanted me to know that he was there if I ever needed help. When he had no idea if we would ever see each other again, he helped our family deal with one of the greatest losses. He turned the normally cold business interview into a caring support for another person in need.

小题1:The author took part in the interview because _______.

A.he had lost his job and wanted to find a new one

B.he had to support his family in Boston

C.his wife had recently died of a heart attack

D.his daughter needed money for schooling小题2: The underlined word "empathetic “in the second paragraph means _____.

A.kind

B.easy-going

C.smart

D.understanding小题3: Which of the following statements is NOT true according to the passage?

A.Bruce invited the author to lunch later.

B.Bruce shared his life experience with the author.

C.Bruce was willing to help the author.

D.Bruce finally gave the job to the author.小题4: We can infer from the last paragraph that ________.

A.Bruce and the author saw each other often

B.the author got little help from Bruce

C.the author learned much from the job interview

D.the author had a better life afterwards小题5: What is the best title for the passage?

A.An act of kindness

B.A pleasant interview

C.The same experience

D.An important lesson

题型:单项选择题

标识X线的放射方式称为

A.自激辐射

B.特征辐射

C.自发辐射

D.轫致辐射

E.热辐射

题型:单项选择题

如图所示,有5000个质量均为m的小球,将它们用长度相等的轻绳依次连接,再将其左端用细绳固定在天花板上,右端施加一水平力使全部小球静止。若连接天花板的细绳与水平方向的夹角为45°。则第201 1个小球与2012个小球之间的轻绳与水平方向的夹角α的正切值等于 (  )

A.

B.

C.

D.

题型:单项选择题

工程监理内容“三控三管一协调”的“一协调”是指( )。

A.进度协调

B.经济协调

C.合同协调

D.沟通协调

题型:单项选择题

汽车进行刹车试验,若速度从8m/s匀减速到零所用的时间为1s,按规定速率为8m/s的汽车刹车后位移不得超过5.9m,上述刹车试验是否符合规定,符合规定的有哪些()

A.位移为8m,符合规定

B.位移为8m,不符合规定

C.位移为4m,符合规定

D.位移为4m,不符合规定

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