货车的中梁截换时须斜接,接口与梁的纵向中心线间的夹角不大于()。
A、450
B、600
C、750
D、80。
参考答案:B
Many questions _____ at the meeting, but he answered none.[ ]
A. came up
B. raised
C. were risen
D. asked
NG飞机的刹车储压器位于()
A.左主轮舱后部
B.龙骨梁上
C.右主轮舱后部翼身接近板内
D.左主轮舱后部翼身接近板内