抗凝血酶(AT)活性减低见于
A. 肝硬化
B. 急性肝炎
C. 因子VII或因子V缺乏症
D. 使用抗凝血药物
E. 使用类固醇药物
The objectives of the ISM Code are to ensure _____.
A. safety at sea
B. prevention of human injury or loss of life
C. avoidance of damage to the marine environment and to property
D. All of the above
In a diesel engine, when installing new piston rings it is important to check_______Iring
A. I only
B. II only
C. both I and II
D. neither I nor II
应特别注意保证核动力厂运行规程与其预期的()相一致。
A. 使用环境
B. 运行指令
C. 管理程序
D. 技术程序
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