【判断题】生长因子是微生物的六大营养要素之一,故配制任何微生物的培养基时,都必须加入生长因子。( )
【单选题】What does not belong to the studying method taken by scientists?
A.
They bury measuring device 3 kilometers under the volcano floor.
B.
They observe carefully the change of the mountain's position.
C.
They also observe activities of the earth when it changes.
D.
Devices are placed within 20 kilometers of Mount St.Helens.
【单选题】What does the man say about himself?
A.
He doesn't have a studying brain.
B.
He is afraid of examinations.
C.
He doesn't have a gift for English.
D.
He hates to be a postgraduate.
【判断题】与其他营养要素不同,对许多微生物来说,生长因子并不是其营养要素。( )
【判断题】如图利用等效电感法判断同名端时,电流表仍为直流电流表。
【单选题】What does the man mean?
A.
He might go to the movies when he finishes studying.
B.
He doesn't know if he concentrates on a movie.
C.
He needs to stop studying for a while.
【单选题】What subjects does he _____ at school? [ ]
【判断题】苍山暴动打击了封建地主势力,制定并通过了包括推翻帝国主义的统治、统一中国,承认民族自治权等在内的《十大纲领》。()