單項選擇題采用棉帆布芯的輸送帶縱向拉伸強度為()
A.560N/(cm﹒層)
B.1500N/(cm﹒層)
C.1400N/(cm﹒層)
D.6500N/(cm﹒層)
A.560N/(cm﹒層)
B.1500N/(cm﹒層)
C.1400N/(cm﹒層)
D.6500N/(cm﹒層)