防护金具主要有（）。
A.防振锤
B.重锤
C.护线条
D.间隔棒
E.预绞丝补修条
F.防振环
参考答案：A, B, C, D, E, F
庆祝新中国成立60周年的国庆阅兵式中，国旗手朱振华的身高是188 [ ]
A．米
B．厘米
Having been attacked by terrorists, ______.
A．doctors came to their rescue
B．the tall building fell down
C．an emergency measure was taken
D．warnings were given to tourists
