【简答题】甲产品原材料费用差异分析见下表,请用因素分析法分析成本增加的原因。 项目 单位 目标 实际 产量 件 300 250 单位产品消耗量 千克 3 5 材料单价 元 5 4 成本 元 4500 5000
【单选题】下列炮制方法的目的,不属降低毒副作用的是
【简答题】交际运用。根据对话内容,在空白处填写适当的话语(话语可能是一个句子,也可能是一个短 语或一个词),使对话完整。 A: It's spring now. The wind is blowing strongly. We can see plastic bags everywhere. 1 bad the environment is! B: Yes, as a citizen, it's imp...
【单选题】A basic characteristic for an ideal independent voltage source is:
A.
the voltage across it has no relationship with the current flowing through it, the current can be any value and is decided by the source and the external circuit.
B.
the voltage across it has relationship with the current flowing through it, the current can ‘t be any value and is decided by the voltage source.
C.
the voltage across it has no relationship with the current flowing through it, the current can be any value and flows out from the positive terminal of the voltage source.
D.
the voltage across it has relationship with the current flowing through it, the current can be any value and may flow out of any terminal of the voltage source.
【判断题】An ideal voltage source is a circuit element that maintains a prescribed voltage across its terminals regardless of the current flowing in those terminals.
【简答题】背景 某机场工程承包公司在机坪扩建工程中浇筑机场道面混凝土时,第五周计划和实际完成的工程量、单价、损耗率如下表,目标材料费593600元,实际材料费为608399元,比目标增加14799元。 商品混凝土目标成本与实际成本对比表 问题 (1)试述因素分析法的基本理论。 (2)根据表中所给资料,用因素分析法分析其材料费增加的原因。
【多选题】对测绘工作而言,航空摄影测量可分为外业与内业工作两大部分。下列哪些是外业工作?
【单选题】下列炮制方法的目的中,不属于降低毒副作用的是
【单选题】Ideal voltage amplifier