正确答案: A
卸荷阀
题目:下列液压控制阀中属于压力控制阀的是( )。
解析:A
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举一反三的答案和解析:
[单选题]If a refrigeration system were short of refrigerant, the condition would result in
continuous running of the compressor
[单选题]旗
flag
[单选题]硫酸庆大霉素不宜用于()
静脉推注
[单选题]对装有可使用雷达的船舶在决定安全航速时应考虑:I、雷达设备的局限性;II、所选用的雷达距离标尺;III、天气对雷达精度的影响;IV、雷达的生产商
I、II、III
[单选题]救生艇应设一盏可控制的环照灯,其颜色为:
白光
[单选题]孤立危险物标的顶标为:()
上下两垂直黑色圆球
[单选题]Which of the following represents the significance the fuel oil cetane number?
Ignition lag is reduced with fuels having a high cetane number