埃及血吸虫
A．肝脏B．肠系膜上静脉C．肠系膜小静脉D．肠系膜下静脉E．膀胱静脉丛
参考答案：E
The Foreign Minister said," our hope that the two sides will work towards peace. " [ ]
A. This is
B. There is
C. That is
D. It is
冷凝效率最高的是（）。
A.直形冷凝器
B.球形冷凝器
C.蛇形冷凝器
D.直形回流冷凝器
