在富Ar----CO2混合气体中进行气保护药芯焊接，熔滴将用颗粒过渡形式过渡。
参考答案：错
-- He was given a free five-day trip to Hainan.
-- He _______ it since he has worked so hard.
A．insists
B．gets
C．deserves
D．receives
我国最大的岛屿是[ ]
A．台湾岛
B．海南岛
C．崇明岛
D．钓鱼岛
