烟雾探测系统安装在：（）.
A.航空电子舱和货舱
B.航空电子舱，货舱和盥洗室
C.同B，另加厨房
参考答案：B
After suffering a heart attack, Michael Jackson was pronounced dead, ________a tragic end to the world’s most popular entertainer.
A．marked
B．to mark
C．marking
D．having marked
转换型领导应具备的特质
