When did President Obama make his remarks at the Pentagon Memorial
A: On Sept. 11th, 2010.
B: On Sept. 11th, 2009.
C: On Sept. 18th, 2009.
D: On July 4th, 2008.
A: On Sept. 11th, 2010.
B: On Sept. 11th, 2009.
C: On Sept. 18th, 2009.
D: On July 4th, 2008.
举一反三
- 2. When was it launched? A: A. On July 11, 2002. B: B. On June 11, 2002. C: C. On March 2009. D: D. On July 11, 2009.
- Four planes were hijacked and crashed on Sept. 11th 2001, causing a death toll of almost 3000. ( )
- --_______. -- From July10 th to July 14 th .
- N沟道增强型MOSFET工作在恒流区的条件是？ A: VGS>VGS(th)，VDS>VGS-VGS(th) B: VGS>VGS(th)，VDSVGS-VGS(th) C: VGSVGS(th)，VDS>VGS-VGS(th) D: VGS<VGS(th)，VDSVGS-VGS(th)
- N沟道增强型MOS管工作在恒流区的条件是()(2) A: uGS>uGS(th),uGD> uGS(th) ; B: uGSGS(th),uGDGS(th) ; C: uGS>uGS(th),uGDGS(th) ; D: uGSGS(th),uGD>uGS(th) 。