每台发动机共有几组(A和B环路)探测元件?()
A.3个
B.4个
C.5个
D.6个
参考答案:C
"Is Tom going to our party this evening?" "No, I ___." [ ]
A.don't think so
B.think not
C.think no
D.don't think yes
霉菌和酵母对营养要求均较高,能在营养肉汤培养基上良好地生长。