【Weekly Topic】【Storage & Transportation Version 20160411】
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Participation reward: 2 Wealth. Reward for correct answer: 9 wealth. The minimum height of the padding in an open-air cargo yard should generally be no less than ( ) A. 20 centimeters B. 30 centimeters C. 40 centimeters D. 50 centimeters 【Haichuan Thanksgiving】--Production Area 【Production and Management Area】is seeking moderators and technical discussants to join us
The minimum height of the padding in an open-air cargo yard should generally be no less than (D). A. 20 centimeters B. 30 centimeters C. 40 centimeters D. 50 centimeters
The minimum height of the cushion layer in an open-air cargo yard should generally be no less than (D)