单项选择题 Please see to it ______ shipment of this order is effected during this month, since punctual shipment is one of the important consideration in dealing with our market. A．what B．that C．which D．while

未知题型 已知某水闸为平底矩形，当通过的单宽流量q=1.93m3/(s·m)时发生水跃，已测得跃后水深h2=1.46m，试判断水跃的类别并求跃前水深。

未知题型 为进一步确诊急性细菌性痢疾(中毒型)，应首先选择的检查是A．脑脊液检查B．血常规检查###S