1235. The aircraft and engine manufacturers recommend that you do not weld engine components when the engine is installed on the airframe

You had better not to weld engine components when the engine is installed on the airframe.

You＇re not allowed to operate engine components when the engine is installed on the airframe.

You had-better not to weld engine components when the engine is running.

正确答案：A

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2128. 不要让压力小于(或大于)20psi

2127. 在防滑模块与驻车制动模块之回的高压正常制动回路系统中,建议采用镀镉耐腐蚀钢或镀镉钢接头替代铝接头。

2126. To make or become larger as a result of pressurization by a gas

2125. A form of printing shall be used which results in a black image suitable for reproduction

2124. There is no indication of single loop operation in the flight compartment until you do the OVHT/FIRE test

2123. De-icing is a procedure that removes ice and snow from the aircraft surfaces

2122. The air goes through riser ducts and up side walls to an overhead distribution duct

2121. To make pin remove easier, manually turn the canopy in one direction and then in the other

2120. 发动机中压缩空气的部分。包括外壳,叶片,护罩,转子,扩压器等。还包括定子叶片的维护和大修,但不包括可变定子叶片的操作。

2119. DO NOT OPEN THE CARGO DOOR IN STRONG WINDS STRONG WINDS ARE DANGEROUS