因签订《马关条约》而被国人唾骂的清政府官员是[ ]
A.奕訢
B.左宗棠
C.李鸿章
D.曾国藩
答案:C
直刃壁孔口凹模,其特点是刃口强度(),修磨后刃口尺寸(),制造较方便。
Inflatable liferafts are less maneuverable than lifeboats due to their().
A.shape
B.shallow draft
C.large sail area
D.All of the above