题目内容

一般来说氨基酸类表面活性剂有低的刺激性和良好的安全性。

A. 正确
B. 错误

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下列关于信用证项下出口押汇业务融资比例要求规定正确的是()。

A. 出口押汇金额不超过出口票据金额的80%
B. 出口押汇金额不超过出口票据金额
C. 融资金额与预计利息和相关费用之和不超过出口票据金额的80%
D. 融资金额与预计利息和相关费用之和不超过出口票据金额

在六西格玛管理组织中,确定黑带项目的是()

A. 倡导者
B. 黑带大师
C. 黑带
D. 绿带

什么叫缓蚀剂?常用的有哪几类?简要叙述各类缓蚀剂的防蚀原理和特点。

A crew member reports that the high-pressure alarm light of a low-pressure CO2 fixed fire extinguishing system is illuminated. The most probable cause of this condition would be that().

A. an air leak has developed in the tank
B. the tank cooling system has malfunctioned
C. the pilot cylinder discharge valve is leaking
D. an excessive amount of insulation has been installed on the tank and piping

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