(1)若2a-b=5,则多项式6a-3b的值是______. (2)多项式x2+

题型:解答题

问题:

(1)若2a-b=5,则多项式6a-3b的值是______.

(2)多项式x2+4x-2的值为2,求多项式2x2+8x-5的值.

考点:代数式的求值
题型:解答题

人们将把以下哪个作为硬件基本部件的计算机称为第一代计算机( )

A.电子管

B.ROM和RAM

C.小规模集成电路

D.磁带与磁盘

题型:解答题

成人伤寒患者,抗菌治疗首选下列何种药物()

A.氯霉素

B.第三代头孢菌素类

C.磺胺类

D.喹诺酮类

E.氨苄西林

题型:解答题

质量检验的预防功能体现在( )。

A.通过检测数据测定过程能力和绘制控制图,以便发现过程变化趋势

B.通过质量检验发现产品质量存在的问题,区分合格与不合格

C.通过作业过程中的首检和巡检及时发现问题,避免出现成批的不合格品

D.通过对质量检验发现的不合格品生产者的处罚,预防其再次出现不合格品

E.广义的预防作用,即通过前过程的“把关”,预防后过程不合格的发生

题型:解答题

在我国,支票主要在城市票据交换范围内使用和流通,故在同城范围内,支票的提示期限为()。

A、15天

B、10天

C、7天

D、5天

题型:解答题

A 19-year-old primigravida is admitted to the labor and delivery unit in labor. She’s 2 cm dilated and 50% effaced, and the fetal head is at 0 station. She’s having moderately p 40-second contractions every 5 minutes. She seems rather anxious and becomes very tense during each contraction. When the client asks for pain relief, what should the nurse do next()

A. Determine the source of her anxiety and institute interventions to help her relax.

B. Immediately check the physician’s order and give her the analgesic ordered.

C. Inform her that the neonate’s head isn’t down far enough just yet but that, as soon as it is, medication will be given.

D. Tell her that her contractions are only moderately p and that she should wait until later to take medication.

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