单筋矩形截面梁截面设计时,受压区高度X的计算式为()。 A: X=h0-√h0-2γ0Md/fcd*b B: X=ρ*fsd/fcd*h0 C: X=√γ0Md/ξ(1-0.5ξ)fcd*b D: X=Afsd/bfcd
单筋矩形截面梁截面设计时,受压区高度X的计算式为()。 A: X=h0-√h0-2γ0Md/fcd*b B: X=ρ*fsd/fcd*h0 C: X=√γ0Md/ξ(1-0.5ξ)fcd*b D: X=Afsd/bfcd
In 1803 the United States purchased Louisiana from _____.
In 1803 the United States purchased Louisiana from _____.
单筋矩形截面梁截面复核时,受压区高度的计算式为()。 A: X=√γ0Md/ξ(1-0.5ξ)fcd*b B: X=h0-√h0-2γ0Md/fcd*b C: X=ξbh0 D: X=Afsd/bfcd
单筋矩形截面梁截面复核时,受压区高度的计算式为()。 A: X=√γ0Md/ξ(1-0.5ξ)fcd*b B: X=h0-√h0-2γ0Md/fcd*b C: X=ξbh0 D: X=Afsd/bfcd
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
国际网球联合会成立于 A: 1903 B: 1803 C: 1913 D: 1923
国际网球联合会成立于 A: 1903 B: 1803 C: 1913 D: 1923
霍尔效应哪一年发现的? A: 1881 B: 1879 C: 1803 D: 1831
霍尔效应哪一年发现的? A: 1881 B: 1879 C: 1803 D: 1831
_____entered into force in1983. A: A revised version of Annex I of MARPOL 73/78 B: A revised version of Annex II of MARPOL 73/78 C: A revised versions of Annex I and Annex II of MARPOL 73/78 D: MARPOL 73/78
_____entered into force in1983. A: A revised version of Annex I of MARPOL 73/78 B: A revised version of Annex II of MARPOL 73/78 C: A revised versions of Annex I and Annex II of MARPOL 73/78 D: MARPOL 73/78
卢浮宫是_______年向公众开放的?( ) A: 1789 B: 1803 C: 1792 D: 1793
卢浮宫是_______年向公众开放的?( ) A: 1789 B: 1803 C: 1792 D: 1793
空想社会主义的开山之作《乌托邦》出版于() A: 1623 B: 1803 C: 1821 D: 1516
空想社会主义的开山之作《乌托邦》出版于() A: 1623 B: 1803 C: 1821 D: 1516
以下哪些图像格式支持透明背景() A: PNG/JPEG B: PNG/GIF C: JPEG/GIF D: BMP/PNG
以下哪些图像格式支持透明背景() A: PNG/JPEG B: PNG/GIF C: JPEG/GIF D: BMP/PNG