【名词&注释】
破伤风抗毒素(tetanus antitoxin)、白喉抗毒素(diphtheria antitoxin)
[单选题]The upper piston rings m large, slow-speed, two-stroke/cycle diesel engines are most effectively lubricated by oil ____.
A. fed from mechanical lubricators
B. thrown off from the main bearings
C. supplied from wick fed drip lubricators
D. flow from a centrifugal or banjo oiler
查看答案&解析
举一反三：
[单选题]凡外伤时，尤其深而小伤口及污染严重伤口均应注射______。
A. 白喉抗毒素
B. 乙肝免疫球旦白
C. 丙种球旦白
D. T.A． T(破伤风抗毒素)
[单选题]()工况不需开动锚机。
A. 绞艏缆
B. 浅水抛锚
C. 深水抛锚
D. 起锚
[单选题]Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?
A. Leaking seal ring
B. Insufficient heat transfer from the exhaust valves
C. Blocked cooling water passages to the head
D. Excessive scavenging air provided to the engine
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