It is very necessary that each cylinder （） before the charged air is compressed.
It is very necessary that each cylinder （） before the charged air is compressed.
It is very important that each cylinder should be （） scavenged before the charged air is compressed.
It is very important that each cylinder should be （） scavenged before the charged air is compressed.
_______ being compressed, the volume of a substance will be reduced.
_______ being compressed, the volume of a substance will be reduced.
中国大学MOOC: Air,_______________, may be compressed into a small container.
中国大学MOOC: Air,_______________, may be compressed into a small container.
API函数wx.chooseImage(Object object)的参数属性sizeType用于所选图片的尺寸，其默认值为（ ） A: ['original', 'compressed'] B: 'original' C: 'compressed' D: ’‘
API函数wx.chooseImage(Object object)的参数属性sizeType用于所选图片的尺寸，其默认值为（ ） A: ['original', 'compressed'] B: 'original' C: 'compressed' D: ’‘
Under ______________, the standard work week is compressed into fewer than five days.
Under ______________, the standard work week is compressed into fewer than five days.
智慧职教: Compressed air is supplied by air compressors to air receivers.
智慧职教: Compressed air is supplied by air compressors to air receivers.
The primary task of the compressed air system is to deliver the starting air necessary for _____.
The primary task of the compressed air system is to deliver the starting air necessary for _____.
The fresh air coming in through the inner air ports， is compressed by（） to a higher pressure.
The fresh air coming in through the inner air ports， is compressed by（） to a higher pressure.
中国大学MOOC: is not the basic method of manufacturing compressed tablets according to the text.
中国大学MOOC: is not the basic method of manufacturing compressed tablets according to the text.