【简答题】铸件冷却时,在表面和内部、薄壁部位存在冷却速度差,这种速度差导致铸件产生很大的(),是铸件开裂的主要原因
【单选题】导游员在带团过程中,如遇有( ) 的情况,应劝阻旅游者自由活动。
【单选题】The tourists will find the guide book is of even ________ practical value than they thought, as it shows different routes to the places they are going to.
【单选题】Router R1 sits inside OSPF area 1. Router R2 redistributes an E1 route into OSPF for prefix 2.2.2.0/24, with external metric 20. Router R22 redistributes an E2 route for the same prefix/length, extern...
A.
R1 will always choose the route through R22.
B.
As long as R1's best internal OSPF cost to reach R22 is less than 10.
C.
As long as R1's best internal OSPF cost to reach R22 is less than 20.
D.
R1 will never choo se the route through R22 if the E1 route through R2 is available.
【单选题】下列哪项是腰椎间盘突出症最先出现的症状( )
【单选题】fseek 函数的正确调用形式是
A.
A) fseek(文件类型指针,起始点,位移量) ;
B.
; B) fseek(ip.位移量,起始点) ;
C.
C) fseek(位移量.起始点,fp) ;
D.
; D) feek(起始点.位移量,文件类型指针)↓