2009年广东省高考数学试题B卷(理数)（2009 college entrance examination mathematics test B (number)）.docVIP

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2009年广东省高考数学试题B卷(理数)（2009 college entrance examination mathematics test B (number)）.doc

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2009年广东省高考数学试题B卷(理数)（2009 college entrance examination mathematics test B (number)）

2009年广东省高考数学试题B卷(理数)（2009 college entrance examination mathematics test B (number)） True or false () when the cursor is attached, the foot and the cursor line should be aligned. Square root True or false () the front Angle of the standard group drilling the edges of the arc blade decreases before the arc blade, the wedge Angle increases and the strength increases. x True or false The standard group drill has two symmetrical split slots at the back. x True or false () the shavings of the standard drill will narrow the width of the cut, which will make the cuttings smooth. Square root True or false () drill brass to reduce the front Angle of the outer edge, in order to avoid the phenomenon of zach. Square root True or false () the drilling of a thin sheet is used by drilling in the center of the drill. Square root True or false () the interval between the two measurements should be maintained between the two measuring surfaces. Square root True or false It is important to lubricate the hole by using the lubricating cutting fluid. Square root True or false () the lower Angle at the edge of the main cutting edge of the drill is smaller. x True or false () when clamping the workpiece, a long pipe can be put on the handle to increase the clamping force. x True or false () because the drill bit is high because the drill is high, the drill is cooled quickly in the air, so there is no cutting fluid. x True or false A hole in the center of the hole is not perpendicular to the end of the hole. Square root True or false A fluid acting pump depends on the fluid flow of energy to transport the liquid. Square root True or false When drilling deep hole with deep hole, the cutting fluid with certain pressure can be injected in order to keep the cuttings unblocked. Square root True or false When drilling a deep hole with a long drill, it is not necessary to exit the cuttings in the same way as the deep hole drill. x True or false () the secondary maintenance of drilling machine, the