DDZ-Ⅱ型调节器的使用规则(MDTL-221)调节器为例。
33. try { 34. // some code here 35. } catch (NullPointerException e1) { 36. System.out.print(”a”); 37. } catch (RuntimeException e2) { 38. System.out.print(”b”); 39. } finally { 40. System.out.print(”c”); 41. } What is the result if a NullPointerException occurs on line 34?() [" c"," a"," ab"," ac"," bc"," abc"]
秦代御史的职责是什么?
简述输气管段中形成天然气水合物的内因和外因。
“三皇五帝”
文化内涵