电流在单位（）内做的功叫做电功率。 长度。 面积。 时间。 截面积。
Given: Which four code fragments, inserted independently at line 7, will compile?（） public void m1() { }。 protected void m1() { }。 private void m1() { }。 void m2() { }。 public void m2() { }。 protected void m2() { }。 private void m2() { }。
临床和动物实验中常检测（）的变化，并结合精子生成过程中各阶段细胞的功能和形态学改变，评价外源化学物的生殖毒性。 乳酸脱氢酶。 山梨醇脱氢酶。 鸟氨酸脱氢酶。 6－磷酸葡萄糖脱氢酶。
影响机器设备评估价值的基本因素包括（）。 原始成本。 重置全价。 成新率。 功能成本系数。 物价指数。
A project requires a new server to be set up with the ability to automatically fail over its Ethernet connection to a second connection if a network failure occurs. Which of the following provides greatest resiliency？（） Two switch ports will be needed on a switch,two Ethernet cables will be needed for theserver each connecting to two different Ethernet cards,and one IP address will be needed。 Two switch ports will be needed on two different switches two Ethernet cables will beneeded for the server each connecting to two different Ethernet cards,and one IP address will be needed。 Two switch ports will be needed on two different switches,two Ethernet cables will be needed for the server each connecting to two different Ethernet cards,two different IP addresses will be needed。 One switch port will be needed on one switch,a splitter will be needed to split the connection,two Ethernet cables will be needed for the server each connecting to two different Ethernet cards,and two different IP addresses will be needed。
我国企业所得税的征税方法是（）
