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单选题
222 、 Water displacing corrosion inhibiting compound has been applied during construction on certainairplanes Ain the locations shown in this figure .Periodic reapplication in these, and other locations, isrequired to maintain effectiveness of this protection. 在图中所示的某些飞机上，水驱蚀缓蚀剂已在施工过程中被应用。为了保持这种保护的有效性，需要在这些位置和其他位置定期重新应用。
A
At the location shown in the figure, waterproof corrosion inhibiting compound has been used on certainaircraft construction. To keep the effectiveness of this protection, reapply the compound in these or otherlocations periodically.
B
Water displaying corrosion inhibiting compound has applied on certain airplanes structure in the locationsin this figure. Periodic reapplication must be applied in these and other locations, so as to maintaineffectiveness of this protection.
C
Water displacing anti-seize compound has been applied on certain airplanes construction in the locationsin this figure. Periodic reapplication should be utilized in these and other locations, in order to keepeffectiveness of the protection
答案解析
正确答案：B
相关知识点：
水驱蚀剂施工需定期重涂
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