At present, the cutting depth of shearer in China tends to decrease.
A: 正确
B: 错误
A: 正确
B: 错误
B
举一反三
- At present, the cutting depth of shearer in China tends to decrease.
- Which of the following is not the common cutting depth of drum shearer? ( ) A: 0.6m B: 0.8m C: 0.3m D: 1.0m
- With the increasing of the foundation embedment depth, the bearing capacity of the soil tends to ( ) A: increase B: not change C: decrease D: uncertain
- The three cutting parameters for turning processing are ( ). A: cutting speed, feed and depth of cut B: cutting speed, workpiece rotational frequency and depth of cut C: workpiece rotational frequency, feed and depth of cut D: depth of cut, workpiece rotational frequency and feed
- If the size of a tax increases, tax revenue will ( ) A: increase. B: decrease. C: increase, then decrease. D: decrease, then increase.
内容
- 0
The dimension of the cutting layer measured along the machined surface is called （ ） A: cutting depth B: cutting length C: cutting width D: cutting thickness
- 1
Among the cutting parameters, the most important factor affecting the cutting temperature is (). A: feed B: cutting speed C: cutting depth D: cutting thickness
- 2
5. “China tends to be friendly to the whole world.” indicates a habitual present. A: 正确 B: 错误
- 3
There are three factors that make up the cutting conditions:cutting speed,feed rate and depth of cut.
- 4
At present there are many export processing zones in China, all of which are under the supervision of China Customs. A: 正确 B: 错误