（）类射线装置一般不会造成受照射人员的放射损伤。
A.Ⅰ
B.Ⅱ
C.Ⅲ
D.Ⅳ
参考答案：C
–Jane, you’ve made such great efforts that you are ________ to pass the exam.
– It is very kind of you to say so, Mr. Smith.
A．easy
B．bound
C．possible
D．unlikely
升降舵最大偏转角度为机头向上多少度和机头向下多少度（）
A.30°；30°
B.30°；17°
C.17°；17°
