金风77/1500低速永磁同步风力发电机组的发电桨距角是(),停机桨距角是()。
A.0
B.1.5
C.86
D.90
参考答案:B, D
根据句意及首字母提示,完成单词拼写。
1. Jim is two years y___________ than Ben.
2. I often go to school on foot, but s___________ by bike.
3. My brother likes singing, but I don't. I like d___________.
4. She can p___________ the book on her finger, but I can't.
5. I want to w___________ an e-mail.
6. Mr Black comes from England. He is l___________ in Australia.
7. There are five people in his f___________.
8. I'd like to have a house with a nice g___________.
9. Mary's father's o___________ isn't in this building.
10. A k___________ is a room for cooking.
采用()可以提高机组的循环热效率。
A、降低蒸汽的温度;
B、提高蒸汽的温度和压力;
C、提高排汽压力;
D、增加蒸汽的温度和压力。