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This post was last edited by liuquan1100 on 2017-9-29 08:38. [Daily Question No. 084] On 2017.09.29, protective equipment consisting of ( ) should be provided for operators who may come into contact with LNG. A. Ordinary B. Freeze-resistant C. Fire-resistant D. Corrosion-resistant. The reference answers will be visible after submission; scoring is based on identifying the key points. The answer to the daily activity question has changed; today’s answer will be shown in subsequent questions. For management purposes, if you need to view content from a few days ago, please access it through the summary post below. 2017 Q&A Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html Petrochemical Zone – “Creative Ideas for Energy Saving” campaign (the second phase is in full swing) http://bbs.hcbbs.com/thread-1666758-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question No. 074] September 19, 2017: If the surface of the skin ( ), it will stick to the surface of a cold object when in contact with it. Humidity 【Daily Question No. 075】 September 20, 2017: The usual color of nitrogen gas cylinders is ( ). (A) Black (B) White (C) Sky blue (D) Red. (A) Black 【Daily Question No. 076】 September 21, 2017: The main way in which toxic substances enter the human body is ( ). (A) Respiratory transmission (B) Digestive tract absorption C) Contact with the human body surface and inhalation (D) Hand contact C【Daily Question No. 077】 September 22, 2017: () refers to the distance that should be maintained between buildings or piles of materials in order to prevent the spread of fire and its mutual impact. Fill in the blank: Fire protection spacing 【Daily Question No. 078】 September 23, 2017. “In an instrumentation system, an intrinsically safe circuit is formed by intrinsically safe instruments and （ ）.” A. Surge protector B. Isolation barrier C. Relay D. Card holder b【Daily Question No. 079】 September 24, 2017: In the equation pV=nRT, what does “p” represent? A. Gas pressure B. Gas density C. Gas temperature D. Operating pressure A 【Daily Question No. 080】 September 25, 2017 Which of the following is not a place where LNG is prone to leakage? A. Valve B. Flange C. Pipe D. Weld C【Daily Question No. 081】 September 26, 2017 \"A safety belt is a personal protective device used by workers performing work at heights to prevent falls and related injuries. The correct way to use a safety belt is ( ).\" A. Hang low and use at a high position B. Hang high and use at a low position C. Hang horizontally D. No specific requirement B【Daily Question No. 082】 September 27, 2017 “Mobile pressure vessels are divided into two main categories: gas cylinders and tank trucks. What is the principle behind this classification?” A. Classification based on the medium contained in the container B. Classification based on the purpose of the container C. Classification based on its volume and structural shape D. Classification based on the operating pressure of the container C [Daily Question No. 083] September 28, 2017: “During the normal operation of the instrument, what is the status of the two valves in Instrument Group 2?” A. Pressure tap valve open, discharge valve closed B. Pressure tap valve closed, discharge valve open C. Pressure tap valve open, discharge valve open D. Pressure tap valve closed, discharge valve closed A