单项选择题 With reference to the 4 000 dozen shirts under our sales confirmation No．TE 151 , we wish to draw your attention to the fact that the date of delivery is ______ but up to the present we have not received the covering L/C. A．approach B．to approach C．approached D．approaching

未知题型 有一梯形断面渠道，底宽b=8m，边坡系数m=1.5，通过的流量Q=45m3/s，在渠道中发生水跃，其跃前水深h1=0.85m，试求：(1)跃后水深h2；(2)水跃的高度a。

未知题型 用于肝气不舒引起的月经不调的是（ ）A.调经丸B.同仁乌鸡白凤丸C.逍遥丸###S