蔬菜乙级种子的发芽率要求达到()左右。
A.50%
B.65%
C.85%
D.95%
参考答案:C
It is believed that part of animals can’t stay alive in water at 1,500 meters below ____
sea level.
A.不填;不填
B.a; a
C.the; the
D.不填; the
路基()等地表排水设施应与天然沟渠和相邻的桥涵、隧道、车站等排水设备衔接配合,组成完整的排水系统。