【判断题】若棱镜位于非平行光路中,则要求光轴与两折射面垂直,否则,展开的平行平板玻璃将不垂直于光轴。
【单选题】(扬州期木)The farmers were worried about the coming flood, because theyjust ___the seeds.
【单选题】真核生物DNA复制中填补冈崎片段间空隙的酶是( )。
【单选题】The farmers worried about the lack of rain.
【单选题】《重返前线》是朝鲜红色经典电影中()类型的战争片。
【单选题】参与真核DNA复制引发过程的酶是( )。
【单选题】The American farmers worried that______.
A.
their horses would be replaced by the 'iron horse'
B.
there would be no market for their crops
C.
there would be no market for their livestock
D.
they would benefit less from railroads than from waterways