皮皮学，免费搜题
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【判断题】
中速切削时易形成积屑瘤。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】( )是一种在职培训方式,员工在景区不同部门进行轮岗,在不同的岗位上进行实际工作学习。
【单选题】选择与听到的句子意思最接近的一项:
A.
It works very well all the time.
B.
It works very well now.
C.
We make good use of it.
D.
We have put it into use since its installation.
【简答题】n阶拉丁方A=(a ij )，当a ij =a ji (i≠j)时，称A是对称的。当A从左上到右下的对角线上元素是0，1，…，n-1时，称A为幂等的。
【简答题】当n=1时,称为()
【单选题】选择与听到的句子意思最接近的一项:
A.
Gear pump belongs to positive displacement pump.
B.
Screw pump belongs to positive displacement pump.
C.
Gear pump belongs to centrifugal pump.
D.
Gear pump belongs to non-positive displacement pump.
【单选题】选择与听到的句子意思最接近的一项:
A.
Our ship has collided with an unknown ship.
B.
The collision was due to our fault.
C.
The starboard bow of our ship has been struck.
D.
No damage has been done to our ship.
【单选题】选择与听到的句子意思最接近的一项.
A.
Where is the fire-tube boiler?
B.
What's the function of the fire-tube boiler?
C.
There is a fire-tube boiler on board.
D.
The fire-tube boiler is very big.
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