对企业年金基金进行投资是()的职责。
A.受托人
B.账户管理人
C.基金托管人
D.投资管理人
参考答案:D
If it __________for the snow, we ___________the mountain yesterday.
A.were not; could have climbed
B.were not; could climb
C.had not been; could have climbed
D.had not been; could climb
铲运机的主性能参数是()。
A.生产率(m/h)
B.铲斗几何容量(m)
C.发动机功率(kW)
D.机重(t)