Translatingmarketing materials is unnessary in terms of international fairs.
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The interpreter you hire might be a professional freelancer or you may also hire one in a trustworthy translation company.
A. 对
B. 错
Investing on image design is an essential step to impress your clients or partners.
A. 对
B. 错
采用措施，并不能提高细长杆的稳定性。
A. 增大横截面的面积
B. 提高表面光洁度
C. 降低工作柔度
D. 选用优质钢
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