下载APP
举一反三
【单选题】The Fisherman and the bearOne fine day, an old man was fishing and caught nothing. Finally, he gave up and walked back along the shore to his shack（窝棚）. When he got close to the front door, he saw it ...
A.
It held the paw out over the water.
B.
The bear jumped and ran out of the door.
C.
He walked to the door quietly and looked inside.
D.
The bear was gone and had left six large fish for him.
E.
The bear often came to the old man's shack to get honey.
F.
Every time a fish jumped after his paw the bear hit it ashore.
【单选题】The Fisherman and the bearOne fine day, an old man was fishing and caught nothing. Finally, he gave up and walked back along the shore to his shack（窝棚）. When he got close to the front door, he saw it ...
A.
It held the paw out over the water.
B.
The bear jumped and ran out of the door.
C.
He walked to the door quietly and looked inside.
D.
The bear was gone and had left six large fish for him.
E.
The bear often came to the old man's shack to get honey.
F.
Every time a fish jumped after his paw the bear hit it ashore.
相关题目：
【单选题】焊接时接头的（）未完全熔透就是未焊透。
A.
坡口钝边
B.
根部
C.
中部
D.
坡口角度
【多选题】在高温下钛与（）_反应速度较快，使焊接接头塑性下降，特别是韧性大大减低，引起脆化。
A.
氢
B.
氮
C.
锰
D.
铁
E.
氧
【单选题】接头联结零件是用来联结()间接头的零件。
A.
钢轨与钢轨
B.
轨枕与轨枕
C.
钢轨与轨枕
D.
轨枕与道床
【单选题】测量内径1200mm筒体焊接接头环向棱角值用样板长度为（）
A.
不小于50mm
B.
不小于100mm
C.
不小于200mm
D.
不小于300mm
【判断题】坡口焊、熔槽焊、绑条焊接头的焊缝余高不得大于3㎜。（）
A.
正确
B.
错误
【单选题】手工电弧焊接头型式不包括（）
A.
U型坡口
B.
Ⅰ型坡口
C.
Y型坡口
D.
Ⅱ型坡口
【单选题】地震钻机钻井时，主要负责钻杆接头滑润的是（）。
A.
司钻
B.
一钻
C.
二钻
D.
三钻
【多选题】根据接头所在光缆的属性，分为（）。
A.
主干光缆接头
B.
配线光缆接头
C.
中继光缆接头
D.
直通光缆接头
【单选题】The Fisherman and the bearOne fine day, an old man was fishing and caught nothing. Finally, he gave up and walked back along the shore to his shack（窝棚）. When he got close to the front door, he saw it ...
A.
It held the paw out over the water.
B.
The bear jumped and ran out of the door.
C.
He walked to the door quietly and looked inside.
D.
The bear was gone and had left six large fish for him.
E.
The bear often came to the old man's shack to get honey.
F.
Every time a fish jumped after his paw the bear hit it ashore.
【单选题】现行分离式冷气机（特殊机型除外）安装现地被配管完成后，气、液管接头均应？（）
A.
须包覆
B.
不用包覆
C.
随意
【单选题】The Fisherman and the bearOne fine day, an old man was fishing and caught nothing. Finally, he gave up and walked back along the shore to his shack（窝棚）. When he got close to the front door, he saw it ...
A.
It held the paw out over the water.
B.
The bear jumped and ran out of the door.
C.
He walked to the door quietly and looked inside.
D.
The bear was gone and had left six large fish for him.
E.
The bear often came to the old man's shack to get honey.
F.
Every time a fish jumped after his paw the bear hit it ashore.
【单选题】无缝线路绝缘接头轨缝不得小于( )。
A.
6mm
B.
8mm
C.
10mm
D.
12mm
【单选题】导线维护标准规定，在H型交叉钢板上（）有接头。
A.
不得
B.
可以
C.
根据情况
D.
无所谓
【判断题】焊接接头的硬度试验应在其纵截面上进行。
A.
正确
B.
错误