If a refrigeration crankcase compressor were short cycling on the low pressure cutout switch, the cause might be that the ().
A. system was overcharged with refrigerant
B. system was low on refrigerant
C. suction valves were leaking slightly
D. relief valve was leaking slightly
查看答案
《党政领导干部问责决定书》由负责调查的纪检监察机关或者组织人事部门代问责决定机关草拟。
A. 正确
B. 错误
实肋板上有许多孔,其作用是()。 Ⅰ双层底空气流通; Ⅱ双层底油和水流通; Ⅲ减轻结构重量
A. Ⅰ、Ⅱ
B. Ⅰ、Ⅲ
C. Ⅱ、Ⅲ
D. Ⅰ、Ⅱ、Ⅲ
女性,25岁,甲状腺大部切除术后2h,出现呼吸困难、颈部肿胀、口唇发绀,首要的紧急处理是()
A. 吸氧
B. 立即拆开颈部缝线,去除血块
C. 气管切开
D. 注射呼吸兴奋剂
E. 请麻醉医师插管
中国乒乓球协会是具有独立法人资格的全国性群众体育组织,简称“中国乒协”,缩写为:()。