层门、轿门联锁开关
参考答案：
层门与轿门关闭后锁紧，同时接通控制回路，轿厢方可运行的机电联锁安全装置。
货币供给之所以是一个内生变量，主要是因为货币当局能够对货币乘数实施直接或完全的控制。( )
Last month an earthquake, ________ a magnitude of 6.3, struck an Indonesian island, and
________ at least 70 people.[ ]
A. measured; killing
B. to measure; killed
C. measuring; killed
D. measuring; having killed.
