仰卧位低血压综合征是因为增大的子宫压迫了（）
A.下腔静脉
B.髂内静脉
C.髂外静脉
D.髂总静脉
E.子宫静脉
参考答案：A
—Can I pay the bill by check?
—Sorry, sir．But it is the management rules of our hotel that payment ____ be made in cash．
A．shall
B．need
C．will
D．can
企业应如何提高客户价值？
