党的十二大把邓 * * 理论写在党的旗帜上,在 * * 中把邓 * * 理论确立为党的指导思想。
参考答案:错
He was so busy ____ his homework that he forgot to have supper.
A.to do
B.do
C.doing
D.does
离心式压缩机转子由()等组成。
A、机壳、隔板、轴端密封
B、主轴、叶轮、联轴器、止推盘
C、弹簧、开程限制器
D、曲轴、轴承、连杆