电容的单位是法拉，简称法，符号是F，由于法拉这个单位太大，所以常用的电容单位有毫法（mF）、微法（μF）、纳法（nF）和皮法（pF）等

If Part XIV still isn't generating: Make sure that the foundation had assets of $5,000 or more at any time during the year. Per the Instructions for Form 990-PF, Part XIV will only be completed if the foundation had $5,000 or more of assets. Make sure that you didn't override the gifts/grants total.

Below are solutions to frequently asked questions about entering Form 990-PF operating and administrative expenses in the Exempt Organization module of Lacerte. ‣ How do I generate Form 990-PF, Part XV in the program? ‣How do I allocate a portion of officer compensation to special event expenses?

Tips when filing Form 990-PF Complete Schedule B (Form 990, 990-EZ, or 990-PF). All organizations must complete and attach Schedule B or certify the organization is not required to attach Schedule B by checking the box in Line 2, Form 990-PF. Part XV, line 3 must be completed if Part I, line 25 has an amount.

电容之间的换算公式：1F（法拉）=1000 mF（毫法），1mF（毫法）=1000 μF（微法），1μF（微法）=1000 nF（纳法copy），1nF（纳法）=1000 pF（皮法）。 1 (F) = 1*E3 (mF) = 1*E6 (uF) = 1*E9 (nF) = 1*E12 (pF)这是完整的科学计数法换算式，都是三次方的关系，皮法和微法是常用的单位。

In recent years, the Form 990-PF has grown from merely a mandatory annual filing to one of the most commonly used and highly scrutinized data sources from which is gained valuable information about an organization.

Form 990-PF is a federal tax return form that must be filed by all organizations officially classified as private foundations. It is mandated by the Internal Revenue Service (IRS) for private foundations to annually submit Form 990-PF to report their activities to the federal government.

2023年7月5日 · 内容提示： 表 常用电气、仪表 P&ID 图仪表字母含义 FV--流量控制阀 电流表 PA HV—手动控制阀 电压表 PV LV—液位控制阀 有功电度表 PJ PV—压力控制阀 无功电度表 PJR TV—温度控制阀 频率表 PF XV—开关控制阀 相位表 PPA ZV—位置控制阀 最大需量表（负荷监控仪） PM YV—用户自定义 P&ID 图仪表字母含义 ...

免费的电容单位转换器，用于pF、nF、µF和F之间的转换。 转换电容单位，解码电容标记并查找标准值。

流量特性：负载恒定情况下，流经滑阀控制窗口至负载的流量Qf， 与滑阀阀芯相对中位的位移XV之间的关系； 压力特性：负载流量Qf =0时，负载压差pf与阀芯位移XV之间的关系； 压力－流量特性：负载流量Qf 、负载压差pf 、阀芯位移XV之间的关 系，或称综合静特性。