APN业务网络接入方式主要有（）
A.互联网接入
B.客户专网接入
C.专线电路接入
D.专用设备接入
参考答案：A, C
在△ABC中，∠C=90°，∠B=60°，斜边AB=14cm，则斜边AB上的高为( )
We are pleased to inform you that the shipment is received ( ) the time limit stipulated in the contract.
A．into
B．up to
C．according to
D．instead of
