井口的控制装置主要包括了万能法兰、全封封井器、半封封井器、法兰短节和安全卡瓦几个部分。
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对重大、复杂的林权争议案件,经申请人提出或者林权争议处理机构认为必要时,可以举行听证。
A. 正确
B. 错误
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
《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