268.确保孔的直径小于规定值。

　Make sure that the diameter of the hole is less than the specified value.

　Make sure that the diameter of the hole is more than the specified value.

　Make sure that the radius of the opening is less than the specified
value.

正确答案：A

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504.IF THE SYMPTOMS ( ) AGAIN, DO A SYSTEM TEST.

503.Existing analyses were reviewed to identify components and areas that
may have exhibited lower margins of safety.

502.Use this alternative procedure if during the test the flow indicator
does not reach the predetermined position.

501.In or to a position nearer to the longitudinal axis

500.将气缸提升至其安装位置的上方。

499.告诉所有人员离开该区域。

498.To bleed the braking system, operate the hand pump handle through
its full travel.

497.WHEN THE TEMPERATURE OF THE VENTILATION AIR ( ) TO 27 ° C, THE

496.Trichloroethylene is a health hazard.

495.An alphabetical index by subject is to be included in the Introduction,
as an assistance in locating the desired circuit.