机动车驾驶人因交通肇事逃逸致人死亡的，处（）有期徒刑。
A.7年以下
B.7年以上
C.15年以下
D.15年以上
参考答案：B, C
社会经济运行经常表现为扩张与收缩的周期性交替，每个周期一般都要经过的阶段有( )。
A．复苏
B．衰退
C．萧条
D．高涨
What is the action that a GMDSS Radio Operator should take when a DSC distress alert is received? （）
A.No action is necessary，as the DSC control unit will automatically switch to the NBDP follow-on communications frequency
B.The operator should immediately set continuous watch on the radiotelephone frequency that is associated with the frequency band on which the distress alert was received
C.The Operator should immediately set continuous watch on VHF channel 70
D.The Operator should immediately set continuous watch on the NBDP frequency that is associated with the frequency band on which the distress alert was received
