已知am=2,an=3,则a2n-m=______.
已知am=2,an=3,则a2n-m=______.
i am ____ a friends A: 1 B: 2
i am ____ a friends A: 1 B: 2
2、I am in Row 2.(变为一般疑问句)_____ _____ in Row 2?
2、I am in Row 2.(变为一般疑问句)_____ _____ in Row 2?
I am in Class ____. A: 1 B: 2 C: 3
I am in Class ____. A: 1 B: 2 C: 3
()的地震称为有感地震。 A: AM<2 B: BM=2~5 C: CM>5
()的地震称为有感地震。 A: AM<2 B: BM=2~5 C: CM>5
已知am=4,an=2,al=3,求am-n-l的值.
已知am=4,an=2,al=3,求am-n-l的值.
【单选题】) — ____ you Miss Smith? — Yes, I ____ . A. Are; are B. Am; am C. Are; am D. Is; am A. Are are B. Am am C. Are am D. Is am
【单选题】) — ____ you Miss Smith? — Yes, I ____ . A. Are; are B. Am; am C. Are; am D. Is; am A. Are are B. Am am C. Are am D. Is am
I tired but I hungry.: am ; am not|am; am|are; are not|is; is not
I tired but I hungry.: am ; am not|am; am|are; are not|is; is not
将下列大气光学质量数值与Θz情况一一对应。1).AM1A、Θz=0°B、Θz=48.2°C、Θz=60°2).AM1.5A、Θz=0°B、Θz=48.2°C、Θz=60°3).AM2A、Θz=0°B、Θz=48.2°C、Θz=60°
将下列大气光学质量数值与Θz情况一一对应。1).AM1A、Θz=0°B、Θz=48.2°C、Θz=60°2).AM1.5A、Θz=0°B、Θz=48.2°C、Θz=60°3).AM2A、Θz=0°B、Θz=48.2°C、Θz=60°
当溶液中有两种辅助配位剂L 和A同时对金属离子M产生副反应,这时金属离子M的总副反应系数为 A: aM= aM(L )+ aM(A) B: aM= aM(L ) + aM(A)- 1; C: aM=aM(L )+aM(A)+ 1 D: aM=aM(L )-aM(A)
当溶液中有两种辅助配位剂L 和A同时对金属离子M产生副反应,这时金属离子M的总副反应系数为 A: aM= aM(L )+ aM(A) B: aM= aM(L ) + aM(A)- 1; C: aM=aM(L )+aM(A)+ 1 D: aM=aM(L )-aM(A)