在STM-1地复用段性能监视时,如果1天测试结果中误块秒(ES)≤()和严重误块秒(SES)≤10,则认为复用段工作正常。
A.50
B.60
C.70
D.80
参考答案:A
After five days' climbing in the mountain, they reached ____ they thought was the place they'd been
dreaming of. [ ]
A. that
B. where
C. which
D. what
以下哪些报价类型属于询价交易方式?()
A、双向报价
B、对话报价
C、做市报价
D、限价报价