Oh, look! Here ________ my father's car.[ ]
A. come
B. coming
C. came
D. comes
答案:D
数字探伤仪显示的是数字化后的波形。
低钠血症是指血清钠低于()
A.135mmol/L
B.145mmol/L
C.155mmol/L
D.165mmol/L
E.175mmol/L