焊接通常分为()、接触焊和熔焊三大类。A、电焊 B、钎焊 C、软焊 D、硬焊

题型:单项选择题

问题:

焊接通常分为()、接触焊和熔焊三大类。

A、电焊

B、钎焊

C、软焊

D、硬焊

考点:用电检查员考试电工基础知识电工基础知识题库
题型:单项选择题

甲乙两种不含结晶水的固体物质的溶解度曲线如下图,下列说法中错误的是

A.t1℃时,50g甲的饱和溶液中溶解了10g的甲

B.将t2℃时的甲、乙两种物质的饱和溶液升温至t3℃(溶剂的量不变),两

种溶液中溶质的质量分数相等

C.t2℃时,要使接近饱和的乙溶液达到饱和状态,可采用蒸发溶剂的方法

D.甲物质的饱和溶液中含有少量乙,可采用降温结晶的方法分离提纯甲

题型:单项选择题

Americans love sports . But this hobby sometimes has serious results—at least to the players. For example, when people play tennis, sometimes they hurt their elbow(肘部). Also it is easy to hurt a knee in a football game. These injuries(毁伤)happen while the player is having fun, but they still hurt.

A few months ago, Kathleen Simmons, who loves playing volleyball, hurt her knee in a volleyball game. Her doctor told her that she needed a very difficult operation(手术)or she might not be able to play again. She felt very sad

Then Simmons learned about “video operation”. With the help of this new science in medicine, doctors can now repair many injuries.

For this operation, her doctor didn’t have to open her knee. Instead he put a very small camera lens(镜头)inside her knee. The lens sent back pictures, which appeared on a television screen. As he worked, he could see the inside of her knee on the TV. With the help of the large pictures on the screen, the doctor knew exactly what to do when he was making the repairs.

Simmons started walking five days after her operation. “My knee hurt a lot the first few days,” she said. “But I felt better very quickly.” Now, six months after her operation, Simmons can do everything she did before her injury. “It feels like a new knee,” she said. “I can even play volleyball again.”

小题1:Do Americans love sports?

小题2:What sport is Simmons interested in?

小题3:What did the doctor put inside Simmons’ knee?

小题4:What problem may people have when they play sports?

小题5:Can Simmons do everything like before?

题型:单项选择题

灌注桩成孔的控制深度与桩型有关,下面正确的是()。

A.摩擦桩应以设计桩长控制成孔深度

B.摩擦桩采用锤击沉管法成孔时,桩管入土深度控制应以贯入度为主,以标高控制为辅

C.当端承型桩采用钻(冲)、挖掘成孔时,应以设计桩长控制成孔深度

D.当端承型桩采用锤击沉管法成孔时,桩管入土深度控制应以贯入度为主,以标高控制为辅

E.端承摩擦桩必须保证设计桩长及桩端进入持力层深度

题型:单项选择题

组织公民行为

题型:单项选择题

《迷糊餐厅》里男主角的大姐是做()工作的。

A.律师

B.作家

C.服务生

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