1个2M传输不用信令压缩的情况下最多可以开通几个载波（）
A.9个
B.10个
C.12个
D.15个
参考答案：B
—Who called just now， Sam?
—It’s Terry. She asked _____.
A．that Alice was in
B．if was Alice in
C．if Alice was in
D．whether was Alice in
债券筹资的优点是资金成本较低、（）、财务杠杆作用明显
