根据规范规定，钢质船的“型尺度”是（）。
A．从型表面上测量所得的尺度
B．从实际船体表面上所测得的尺度
C．船舶最大尺度
D．船舶登记尺度
参考答案：A
Mark was a student at this university from 1999 to 2003,______he studied very hard and was made
Chairman of the Students' Union. [ ]
A. during which time
B. for which time
C. during whose time
D. by that time
损伤性、进行性血胸是指（）
A.胸腔积血1000ml以上
B.胸部伤口流血不止
C.胸腔中等量以上积血
D.气管向健侧移位，叩诊浊音
E.经输血补液后，血压不回升或回升后又迅速下降
