To prevent the overflow of cargo tanks due to expansion, you should top off ().
A. to the bottom of the expansion trunk
B. to within 1% to 3% of its capacity
C. to within 1% to 3% inches of its capacity
D. 1 to 3 inches from top of the vent pipe
系统本身的故障应能自诊断并发出告警,能直观地显示故障内容。
A. 正确
B. 错误
醋酯纤维具有稳定的抗起皱性,抗静电性,弹性好,易起皱,尺寸稳定性好。
A. 正确
B. 错误
轮胎压路机碾压时,各压轮的气压应保持一致,其相对差值不应大于()PA.。
A. 25~30
B. 20~25
C. 15~25
D. 10~20