在2011年10月自治区召开的第八次党代会上确定的新疆精神即：爱国爱疆、（）、勤劳互助、开放进取。
A.团结进取
B.团结拼搏
C.团结奉献
参考答案：C
Yesterday evening I came across the man _____ you think is pleased to _____.
A．who, talk
B．whom, get along with
C．who, work with
D．whom, be talked with
PWM逆变电路的单极性控制和双极性控制有什么区别？
