659.测量硅胶吸收水分所需的时间。( )

　Measure the time necessary for the silica gel to decrease the moisture.

　Check the time necessary for the silica gel to increase the moisture.

　Measure the time necessary for the silica gel to absorb the moisture.

正确答案：C

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278.Install the O-ring in the internal groove of the spherical bearing ( )

277.Identify the wires with sleeves of different colors ( )

276.每个系统包括基本部件和所有仪表、机械控制器,以及与系统有关的电气和液压组件。

275.The circulation of the air in the components is such that the temperature for specific component is not out of the limit ( )

274.If the format parameter or rule is inappropriate to the type of airplane,equivalents likely to achieve the same objective may be used( )

273.Hydraulic fluid is dangerous for your eyes( )

272.如果不进行改装,这个组件的使用寿命就有可能比平时短 ( )

271.Record all repairs to the skin surface( )

270.根据制造商的选择,静压系统的描述和讨论可以结合第 749 段的皮托管压力系统。

269.Pilots Operating Handbooks are prepared in accordance with GAMA Specification No1" ( )"