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【单选题】
慢性呼吸性酸中毒时机体代偿的主要方式是A.
细胞外液缓冲
B.
肾脏代偿
C.
细胞内缓冲 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
D.
呼吸代偿
E.
骨骼代偿 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
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【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
【简答题】某公司承接一座钢筋混凝土框架结构的办公楼，内外墙及框架间墙采用GZ1保温砌块砌筑。目标成本为305210.50元，实际成本为333560.40元，比目标成本超支了28349.90元，用因素分析法分析砌筑量、单价、损耗率等因素的变动对实际成本的影响程度，有关对比数据见下表。
砌筑工程目标成本与实际成本对比表 问题
用因素分析法分析成本增加的原因。
【简答题】用因素分析法分析成本增加的原因。
【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.
【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。
【单选题】Our food supply ________. We'd better get some in case there's none left.
A.
is running out
B.
has run out of
C.
is using up
D.
has used up
【单选题】We'd better try to ____ with the experiment, I think. Now let's ____ with it. [ ]
A.
go through; go on
B.
go on; go over
C.
go over; go through
D.
go on; go through
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