Which of the following statements is correct? ( )
A: All items that are included in M1 are included also in M2.
B: All items that are included in M2 are included also in M1.
C: Credit cards are included in both M1 and M2.
D: Savings deposits are included in both M1 and M2.
A: All items that are included in M1 are included also in M2.
B: All items that are included in M2 are included also in M1.
C: Credit cards are included in both M1 and M2.
D: Savings deposits are included in both M1 and M2.
A
举一反三
- Credit cards () A: are<br/>included in M1 but not M2. B: are<br/>included in M1 and M2. C: are<br/>included in M2 but not M1 D: are<br/>not included in any measure of the money supply.
- Credit cards ( ) A: represent the largest component of M1. B: are not included in M1 but are included in M2. C: are a form of money unique to the U.S. D: are not considered money.
- Credit cards are a A: store of value. B: method of deferring payments. C: medium of exchange included in both M1 and M2. D: All of the above are correct.
- 标准斜齿圆柱齿轮的正确啮合条件是()。 A: m1=m2=m, B: α1=α2=α C: m1=m2=m,α1=α2=α D: mn1=mn2=m,αn1=αn2=αβ1=-β2
- 标准斜齿圆柱齿轮外啮合的正确啮合条件是()。 A: m1=m2=mn,α1=α2=αn,β1=-β2 B: m1=m2=m ,α1=α2=α,h1=h2 C: m1=m2=mn,α1=α2=αn,β1=β2 D: m1=m2=m ,α1=α2=α,β1=β2
内容
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渐开线直齿圆柱齿轮正确啮合条件是()。 A: m1=m2=m B: α1=α2=α C: z1=z2=z D: m1=m2=mα1=α2=α
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一对直齿圆锥齿轮的正确啮合条件是()。 A: m1=m2 B: α1=α2 C: m1=m2α1=α2 D: m1=m2=mα1=α2=α
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设m=m1m2,且(m1,m2)=1,则φ(m)等于什么?() A: φ(m1) B: φ(m2)φ(m1) C: φ(m1)*φ(m1) D: φ(m2)*φ(m2)
- 3
一对渐开线外啮合斜齿圆柱齿轮的正确啮合条件是()。 A: mn1=mn2=m,αn1=αn2=α,β1=-β2 B: mn1=mn2=m,αn1=αn2=α,β1=β2 C: m1=m2=m,α1=α2=α
- 4
图为两台三相异步电动机M1和M2的控制电路。KM1控制电动机M1启停,KM2控制电动机M2启停,M1和M2启动停止的顺序是( )。[img=323x148]17d60856153ba16.png[/img] A: M<sub >2</sub>停止后,M<sub >1</sub>才能停止 B: M<sub >2</sub>启动后,M<sub >1</sub>才能启动 C: M<sub >1</sub>启动后,M<sub >2</sub>才能启动 D: M<sub >1</sub>停止后,M<sub >2</sub>才能停止