火力发电厂的三大主要设备是锅炉、汽轮机和发电机。
参考答案：对
投资连结保险中的投资风险由（）承担。
A.受益人
B.保险人
C.保单持有人
D.投保人
The relatives of the passengers in the missing Flight MH370 cann’t hide their feelings, _____ they can make sure that the plane will make a safe landing on the airport.
A．except when
B．except
C．except that
D．except where
