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bg9.png The question for this issue is as follows: (Single-choice question) In the new explosion-proof standards, the alphabetical code for the explosion-proof design type that is intrinsically safe is: ( ) A. e B. h C. n D. i. The answer to this question will be announced on November 21, 2017.——————————————————————————————————————————————————————— Answers to the previous issue (Fill-in-the-blank question): When using a double-flange level gauge to measure the liquid level in a container, and both the zero point and the range of the gauge have been calibrated correctly, but later the installation location of the gauge is moved upward due to maintenance needs, then the zero point of the gauge ( ) and its range ( ). Answer: Unchanged. Hidden content in this post ———————————————————————————————————————————————————————Scoring criteria: 2 Wealth for an incorrect answer; 3–8 points for an *incomplete* answer; 10 Wealth for a correct answer, provided there is a detailed explanation; 12–15 Wealth for a correct answer with additional *insufficient* explanations. Please score according to these criteria. Note: If there are editing records after answering, only 1 point in wealth will be given to the participant. The time limit for answering is before the next question; 2 points are awarded if the answer is correct within two periods after the deadline, while no points are given if the answer is incorrect or if more than two periods pass. Each instance of continuous malicious spamming results in a deduction of 2 wealth points, with no upper limit; only numbers and emojis are allowed. Any random letters entered, unrelated to the answer, are considered malicious spamming. Points will start to be deducted after three warnings