在制造技术标准范围内,影响烟支空稀头的主要因素有:烟丝结构、()、回丝量、压实量(或烟支紧头位置或烟支单重或VE部分来料均匀性或烟舌的调整)等。
参考答案:VE负压
At the end of 2003, there were around 3,000 foreign printing companies in China,____up
around 2 percent of national total.
A.made
B.to make
C.making
D.having made
We give dogs time, space and love we can spare, and _____, dogs give us their all. [ ]
A. in all
B. in fact
C. in short
D. in return