前起落架安全销装在（）
A.前锁连杆和后锁连杆连接处
B.上阻力杆和下阻力杆连接处
C.锁作动筒和后锁连杆连接处
D.上阻力杆和前锁连杆连接处
参考答案：A
若|x+y﹣5|+（xy﹣6）2=0，则x2+y2的值为（ ）．
He always tells lies. No one likes him ___________. [ ]
A. still
B. also
C. too
D. anymore
