One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 428
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During the PVC polymerization process, the reason for the low vacuum level in the water ring vacuum pump of the negative pressure stripping tower is ( ). A. There is a leak in the pipes of the inlet system； B. Clogged water inlet pipe ； C. Low water inflow, high water temperature ； D. The clearance between the impeller and the pump casing is too large. Answer: A B C D
During the PVC polymerization process, the reason for the low vacuum level in the water ring vacuum pump of the negative pressure stripping tower is (D). A. There is a leak in the pipes of the inlet system； B. Clogged water inlet pipe ； C. Low water inflow, high water temperature ； D. The clearance between the impeller and the pump casing is too large.
During the PVC polymerization process, the reason for the low vacuum level in the water ring vacuum pump of the negative pressure stripping tower is (A.B.C.D). A. There are leaks in the pipes of the inlet system； B. Clogged water inlet pipe ； C. Low water inflow, high water temperature ； D. The clearance between the impeller and the pump casing is too large.
A. There is a leak in the pipes of the imported system； B. Clogged water inlet pipe ； C. Low water inflow, high water temperature ； D. The clearance between the impeller and the pump casing is too large.
During the PVC polymerization process, the reason for the low vacuum level in the water ring vacuum pump of the negative pressure stripping tower is (A). A. There are leaks in the pipes of the inlet system； B. Clogged water inlet pipe ； C. Low water inflow, high water temperature ； D. The clearance between the impeller and the pump casing is too large.
During the PVC polymerization process, the reason for the low vacuum level in the water ring vacuum pump of the negative pressure stripping tower is (ACD). A. There are leaks in the pipes of the inlet system； B. Clogged water inlet pipe ； C. Low water inflow, high water temperature ； D. The clearance between the impeller and the pump casing is too large.
During the PVC polymerization process, the reasons for the low vacuum level in the water ring vacuum pump of the negative pressure stripping tower are (A B C D). A. There are leaks in the pipes of the inlet system； B. Clogged water inlet pipe ； C. Low water inflow, high water temperature ； D. The clearance between the impeller and the pump casing is too large.