The plural of family is written in double L

no need
families

RELATED INFORMATIONS

1. When m is a real number, z = (1 + I) M & sup2; + (5-2i) m + (6-15i) is a real number, an imaginary number and a pure imaginary number
2. What is the complex Z + I = z-iz Z equal to It's Z + I = 1-iz! z=？
3. If the complex Z satisfies iz + II + iz II = 2, find the maximum and minimum of iz + 1 + II
4. Given that the complex Z satisfies izi = 1 and iz + 1 / 2I = iz-3 / 2I, find the complex Z
5. A question in the plural The equation x ^ 2 + ax + 4 + 3I = 0 of X has real roots, and the minimum of modulus of complex a is obtained
6. If x ^ 2 + X + 1 = 0, then x ^ 20 + x ^ 30 + x ^ 40 =? Please write the solution,
7. The plural is such a difficult problem Let Z1, Z2 satisfy Z1 ^ 2 = Z2, Z1, Z2 are the two roots of a quadratic equation with real coefficients, 1) find the value of Z1, Z2, 2) if Z1 = 1 + Ti (T > 0) | Z1 | ≤ radical 2, complex u = Z2 + 3, find the value range of | u |
8. In the experiment of studying the relationship between current and voltage, resistance, when studying the relationship between current and resistance () A. Adjust the sliding rheostat to keep the current in the circuit unchanged B. adjust the sliding rheostat to keep the voltage at both ends of different fixed resistance R unchanged C. make the voltage at both ends of resistance R change in multiple D. make the current in the circuit change in multiple in each measurement
9. How to choose the range of ammeter, voltmeter and rheostat when measuring resistance by voltammetry Ah?
10. What is the symbol of resistance The unit of resistance is Ohm. What is the symbol of ohm for short? There are only two kinds of charges in nature. What and what are they? When charges interact with each other, what are the same kind of charges and what are the different kinds of charges
11. Plural family
12. Please write the plural of family and class
13. The plural of English family
14. The singular and plural problems of family When to use the singular and when to use the plural
15. In the same predicate grammar, the singular is used for family members and the plural is used for family groups. Why?
16. If family refers to family members, is it an uncountable noun or a plural singular?
17. Is people a countable plural or uncountable noun? Is it a fee or a little?
18. People is a collective noun, but is it countable? What is the plural?
19. What do you mean when the collective nouns, family, class, team are plural? Is there a word like that?
20. What are the plural forms of the nouns photo, class, knife, zoo, family, child?