低合金异种钢焊接时,则应该依照强度级别()钢种选用焊条。
A.相同
B.较高
C.较低
D.任意一种钢材
参考答案:C
句型转换。
1. Linda carries some new books to school library. (改为一般疑问句)
_____ Linda _____ any new books to school library?
2. He will return the bike in ten minutes. (对画线部分提问)
_____ _____ will he return the bike?
3. "Does your sister clean her room every day?" Mom asked me. (改写句子,句意不变)
Mom asked me _____ _____ sister _____ her room every day.
4. Tom played volleyball after he helped his mom with chores. (改写句子,句意不变)
Tom _____ _____ volleyball _____ he helped his mom with chores.
[问题5] 论述CPU使用率成为系统性能瓶颈时,如何制定解决方案论述网络带宽成为系统性能瓶颈时,如何制定解决方案