(EMB145)副翼可以由什么动力独立操作()
A.液压
B.机械机构(钢索、连杆等)
C.A或B
参考答案:C
大多数生物碱类的合成途径是( )
A.乙酸-丙二酸途径B.甲戊二羟酸途径C.莽草酸途径D.氨基酸途径E.复合途径
My schoolbag is the same ______ Kitty’s, but different ______ Tom’s.
A.with, as
B.as, with
C.from, as
D.as, from