【判断题】纯铝因其强度低、可加工性差,可焊性差等特点,在汽车工业中使用较少。( ) 2.工业纯铝不能热处理强化,可通过冷变形提高强度,唯一的热处理形式是退火,塑性加工性能好。 ( ) 3.超硬铝合金是目前室温强度最高的一种育铝合金,其高温强度,冲压性也很好.( )
【单选题】On April 30, Holden Company had an Accounts Receivable balance of $18,000. During the month of May, total credits to Accounts Receivable were $52,000 from customer payments. The May 31 Accounts Recei...
【单选题】下列药材中,来源于萝藦科,药用部位为干燥根皮的是
【简答题】下列药材药用部位为根皮的是( )A黄柏B杜仲C秦皮D牡丹皮A. 1 B. 1 C. 1 D. 1
【单选题】根据下面内容,回答题: 为了治疗手足癣,患者使用水杨酸乳膏。水杨酸乳膏的处方如下:水杨酸50g、硬脂酸甘油酯70g、硬脂酸100g;白凡士林120g、液状石蜡1O0g、甘油120g;十二烷基硫酸钠10g羟苯乙酯1g、蒸馏水480ml。 针对患者使用情况下列做法错误的是 查看材料
C.
轻轻按摩给药部位,使药物进入皮肤,直到药膏或乳剂消失
【单选题】冷冲压是先进的金属加工方法之一,冷冲压工艺有以下特点,不正确的是( )。
【单选题】On April 30, Holden Company had an Accounts Receivable balance of $18,000. During the month of May, total credits to Accounts Receivable were $52,000 from customer payments. The May 31 Accounts Receiv...