42. According to the relevant regulation, lifeboat should be powered by _______.

高等植物(higher plant)和低等植物(lower plant)

种子植物(seed plant)和孢子植物(spore plant)

Plant 是指一个受控机械系统，可定义为Plant

Do you often plant trees in spring?--Yes, many trees ___ in our school every year. A: plant B: are planting C: are planted D: will plant

To check the setting of the overspeed trip on a diesel powered generator， you would use a （）.

水电站 _________________ plant

—— What are they doing over there?——They ___trees on the hill. A: plants B: plant C: will plant D: are planting

Which one of the following relationships can describe the relationships in poppy, opium and morphine ( ) A: Plant - crude extract - purified compound B: Crude extract -plant - purified compound C: Purified compound -plant -crude extract D: Purified compound- crude extract -plant

A Coca-Cola bottling plant in Bolivia is wholly owned by a local businessperson. What kind of venture is this plant likely to be? A: franchise B: a licensed plant C: a foreign subsidiary D: a joint venture