问题
问答题 简答题
简述单车试验时GK阀制动感度试验方法。
答案
参考答案：
回转阀手把置于一位充风，待制动管风压达到500kPa后，将手把移至四位减压40kPa前，应起制动作用。然后将手把移至三位保压1分钟，检查制动管因局部减压而继续下降的局部减压量不超过50kPa。在局部减压作用终止后，保压1分钟不得发生自然缓解。
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简述单车试验时GK阀制动感度试验方法。
参考答案：
回转阀手把置于一位充风，待制动管风压达到500kPa后，将手把移至四位减压40kPa前，应起制动作用。然后将手把移至三位保压1分钟，检查制动管因局部减压而继续下降的局部减压量不超过50kPa。在局部减压作用终止后，保压1分钟不得发生自然缓解。
| 完形填空。 Look at the picture of the twins' 1 2 are white and the windows are big. On one of the walls you can see 3 old photo of their family. Their 4 is American(美国人). She is a teacher 5 English. She is 6 a white hat. Behind her 7 their father. He 8 young(年轻的). The boy in the red coat is 9 brother. The twins are sitting 10 the floor. They look like their father and mother. | ||||
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