6.2´104 Pa A: 6.2´104 Pa B: 6.2´104 Pa C: 6.2´104 Pa D: 6.2´104 Pa
6.2´104 Pa A: 6.2´104 Pa B: 6.2´104 Pa C: 6.2´104 Pa D: 6.2´104 Pa
There (be) two copies of this document on the desk.
There (be) two copies of this document on the desk.
电除尘器适用于粉尘比电阻范围是（ ）Ω· ㎝ 。 A: 104～109 B: 104～1010 C: 104～1011 D: 104～1012
电除尘器适用于粉尘比电阻范围是（ ）Ω· ㎝ 。 A: 104～109 B: 104～1010 C: 104～1011 D: 104～1012
____ mean cheap copies of a popular product.
____ mean cheap copies of a popular product.
提单份数Copies of B/L :______
提单份数Copies of B/L :______
He sold ____ of the magazine this afternoon. A: three dozen copy B: three dozens copy C: three dozen copies D: three dozens copies
He sold ____ of the magazine this afternoon. A: three dozen copy B: three dozens copy C: three dozen copies D: three dozens copies
Two copies of the contract will be sent to you for(sign)_____.
Two copies of the contract will be sent to you for(sign)_____.
____ is a telecommunications technology used to transfer copies of documents.
____ is a telecommunications technology used to transfer copies of documents.
What does the phrase “line-for-line copies” mean? ( ).
What does the phrase “line-for-line copies” mean? ( ).
Have you got _____ copies to go round?
Have you got _____ copies to go round?