下列不属桡腕关节结构的是（）。
A.手舟骨
B.月骨
C.三角骨
D.腕关节盘
E.尺骨
参考答案：E
After the Arab states won independence, great emphasis was laid on expanding education, with girls as well as boys ______ to go to school.
A．to be encouraged
B．been encouraged
C．being encouraged
D．be encouraged
提高朗肯循环效率的手段有（）。
A.提高锅炉的供汽压力
B.降低汽轮机的排汽参数
C.提高给水泵的给水压力
D.提高发电机的效率
