根据《建筑施工工具式脚手架安全技术规范》,附着式升降脚手架必须具有()的安全装置。
A.防倾覆
B.防坠落
C.同步升降控制
D.上下限位
参考答案:A, B, C
All of the Plants now raised on farms have been developed from plants __ wild.
A.once they grow
B.they grew once
C.that once grew
D.once grew
下列方法中,( )是我国《票据法》未予认可的票据权利补救方法。
A.公示催告
B.声明作废
C.挂失止付
D.诉讼