单项选择题

( )是最著名和最可靠的反转突破形态。 A.
头肩形态 B.
双重顶(底) C.
圆弧形态 D.
喇叭形态

<上一题 目录 下一题>
热门 试题

单项选择题
简支梁如下所示,其跨内最大弯矩是下列哪一个数值?( )
A.40.0kN·m
B.45.0kN·m
C.60.0kN·m
D.120.0kN·m
单项选择题
How long must the GMDSS radio log be retained on board ________.A.At least two years after the last entryB.At least one year after the last entryC.At least 90 days after the last entryD.At least 30 days after the last entry
A.A.At
B.At
C.At
D.At
相关试题
  • Which of the following statements i...
  • A compass card without north-seekin...
  • It is dangerous for vessels without...
  • 所示屋顶挑檐剖面计算简图中,在荷载P作用...
  • With respect to automatic identifica...