3106. Give temporary protection to areas of bare metal

对裸露的金属区域进行临时保护。

对铁质金属区域进行必要保护。

对有色金属区域涂抹临时保护涂层。

正确答案：A

设备系统操作理论翻译

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257. When you replace a word, always make sure that the alternative you select does not change the meaning of the sentence

256. It is extremely important to observe the fuel safety precautions

255. Examine the contents of the box for missing items

254. 实施航线维修的维修机构其航站在非本国领土时,放行人员应依据航站所属国的航空法规进行资格审定。

253. If the meaning changes, use a different construction

252. An official organization that gives approval to something

251. LET THE DIAL BECOME STABLE BEFORE YOU( ) THE INDICATIONS

250. GET ( ) TO THE ACCUMULATOR FOR THE No 1 HYDRAULIC SYSTEM

249. Do not stretch the seal more than necessary when installing it

248. Ream the hole until it has a diameter of 800 ±0003 mm