【单选题】I just received a proposal()
A.
that you have finalized the delivery dates.
B.
to be more flexible over terms of payment.
C.
that is made with certain conditions.
D.
that could benefit both of us.
【简答题】缺乏维生素B2家禽的典型缺乏症是 [填空(1)] 。A. 曲爪麻痹症
【单选题】安装在墙上或柱上的信息插座应距离地面 厘米以上。
【单选题】安装在墙上或柱上的信息插座应距离地面( )以上。
【单选题】I have just received an invitation from a good friend of mine, asking me to pay a visit to ______ we used to study together.
【判断题】没有随机误差项的模型不是计量经济模型。( )
【单选题】安装在墙上或柱上的信息插座应距离地面 厘米以上。