【多选题】(tt10)关于波形图,理解正确的是()
C.
形图横轴表示质点位置坐标,纵轴表示质点偏离自身平衡位置的位移;
D.
结合波的传播方向和波速u,可以将t时刻的波形图平移uΔt的距离,得到t+Δt时刻的波形图;
【判断题】( )纸张的尺寸是指纸张幅面的大小,这是根据国家规定的《图书和杂志开本及幅面尺寸》的要求裁切的。
【多选题】(tt8-15)关于波形图,理解正确的是()
C.
波形图横轴表示质点位置坐标,纵轴表示质点偏离自身平衡位置的位移;
D.
结合波的传播方向和波速u,可以将t时刻的波形图平移uΔt的距离,得到t+Δt时刻的波形图;
【单选题】Rigoberto Padilla, 21, came to the USA from Mexico when he was 6. He went to school in Chicago, joined the honor society and dreamed of becoming a lawyer-all while living here illegally. Padilla's sta...
A.
he was charged with drunken driving
B.
he had no Social Security number
C.
he did not get the financial aid in the college
D.
he was an illegal in,migrant
【单选题】His name is James, but he calls ________Jim.
【简答题】[A] wanted [B] continued [C] tried [D] stopped
【单选题】John said he'd been working in the office for an hour, ______ was true.