BMW一般采用哪种转向器（） 齿轮齿条式。 循环球式。 蜗杆齿扇式。 伞形齿轮式。
简述清纱目的。
In a shell-and-tube type hydraulic fluid cooler, the amount of heat transferred from the hydraulic fluid to the cooling water depends upon（） the temperature of the hydraulic fluid。 the flow rate of the hydraulic fluid。 the temperature of the cooling water。 all of the above。
In preparing a cargo space for receipt of a shipment of bagged cargo，which instruction for laying dunnage should be followed? （） Use either 1 or 2 tiers of dunnage，spacing the pieces in each tier a foot apart，and lay pieces in the bottom tier diagonally to the ship's side。 Use 1 tier of dunnage，laying the pieces tightly together to form a solid floor over the steel deck。 Use 2 tiers of dunnage，spacing the pieces in the bottom tier about a foot apart and the pieces in the top tier 6 inches apart。 Use 2 tiers of dunnage，spacing the pieces in the bottom tier about a foot apart and the pieces in the top tier together。
散货的盘点一般采取测量体积×（）的方式，计算出重量。 密度。 堆密度。 比例。 比值。
采用ADC0809构成模拟量输入通道，ADC0809在其中起（）作用。
