【单选题】下面能使胎面中部磨损较快,胎肩部变浅原因的是( )。
【判断题】肘关节由肱骨下端和桡、尺骨的上端构成,包括肱尺关节、肱桡关节和桡尺远侧关节三个关节。 ( )
【单选题】Which of the following is TRUE?
A.
People evacuated from their homes can return now.
B.
Flood waters arc receding in all parts of the upper mid-western United States.
C.
Flooding is expected to continue for a few more days.
D.
There was a record snowfall last year.
【单选题】下列不属于爆炸性气体危险区域等级的是 区。
【单选题】(CH 3 ) 2 CHCO 2 Et 通过酯缩合反应可制备 , 所用试剂为 :
【单选题】ARM920T与ARM9TDMI处理器相比加入了2个协处理器( )。