CAD制图中“圆弧”的快捷键为()。

题型:填空题

问题:

CAD制图中“圆弧”的快捷键为()。

考点:弱电工程师弱电工程师题库
题型:填空题

Many people like to travel by plane , but I don't like it because an airport is usually far from  the city. You have to get there early and wait for hours for the plane to take off and it is often late. You can't open the windows. You can't choose the food. Planes are fast, but they still take hours  to go out of the airport and into the city.

I like traveling by train. I think trains  are safe. Railway stations  are usually in cities. When you are late for a train, you can catch another one. You can walk  around in the train and open the windows. You can see many interesting things on your way. I know it takes a little more time. I  also like cars. You can start your journey when you want to, and you don't need to get to a railway station or a bus stop. also you can carry many things with you in a car. But sometimes there are too many cars on the road.

小题1:Why do many people like to travel by plane?

A.Because it is fast.

B.Because it is often late.

C.Because an airport is far from the city .

D.Because they can open the window.小题2:Which is not the good thing about the train?

A.It is safe.

B.It takes a little more time.

C.You can open the windows.

D.You can walk around in the train.小题3:If you want to take a lot of things with you, what do you take to go out?

A.A bus.

B.A car.

C.A train.

D.A bike.小题4:What is the bad thing about the car?

A.You needn't go to a station.

B.You can start your journey when you want to.

C.There are too many cars on the road.

D.You needn't go to a bus station.小题5:What does the writer think of the plane, the train and the car?

A.He likes to take A plan , the train and the car.

B.He doesn’t like to take a plane because it's fast.

C.He likes to take a car because he has a car.

D.He likes to take a train although it takes a little more time.

题型:填空题

患者,女性,35岁,牙龈自发性出血6个月就诊。患者自述平时轻微碰撞皮肤即会出现瘀斑。检查:牙龈充血、水肿,龈沟内有血性渗出,舌缘、两颊黏膜多处瘀斑。血常规检查:血小板计数30×109/L。

下列哪种措施也可用于治疗该病()

A.脾切除

B.免疫增强剂

C.补充铁剂

D.维生素B12、叶酸

E.维生素C

题型:填空题

有关全身静脉麻醉的说法,下列哪项是错误的()。

A.氯胺酮可用于严重妊高征产妇

B.丙泊酚对新生儿呼吸有抑制

C.硫喷妥钠对新生儿呼吸有抑制

D.羟丁酸钠禁用于严重妊高征产妇

E.氯胺酮对新生儿无抑制

题型:填空题

二尖瓣狭窄行闭式交界分离术的禁忌症是

A.合并心房纤颤,肺动脉高压

B.二尖瓣狭窄并有二尖瓣关闭不全

C.中期妊娠病人心功能Ⅱ-Ⅲ级

D.伴有主动脉瓣关闭不全者

E.二尖瓣狭窄出现不可控制的咳嗽,红色泡沫痰

题型:填空题

在学习“酸碱中和反应”时,老师给大家变了一个魔术﹣﹣使“水”变色的杯子.操作过程及现象如图所示.

老师揭秘:“空”杯子底部事先涂抹了某种无色液体,无色的“水”是事先用两种无色溶液混合而成.请回答下列问题:

(1)“空”杯内涂抹的物质可能是溶液____________.

(2)此过程中发生反应的化学方程式可能是_______________________

(3)最终溶液为无色,能否说明该溶液一定呈中性?_________(选填“能”或“不能”),理由是________________________.

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