冷轧厂1780机组酸洗入口激光焊机为二氧化碳激光焊机,其激光气体为()
A、CO2、Ar、N2
B、CO2、He、O2
C、CO2、、He、N2
D、Ar、He、N2
参考答案:C
The goal of a “competition” may simply be ______ fun and enjoy the excitement of trying something new. [ ]
A. to have
B. having
C. having had
D. have
JMP WORD PTR ABCD(ABCD是符号地址)是( )。
A.段内间接转移
B.段间间接转移
C.段内直接转移
D.段间直接转移