设备的操作者应做到"三好、四会"三好是指:(),用好设备,修好设备
参考答案:管好设备
Naomi ran a shop in Madrona for three years she decided to move into a better place nearby.
A.once
B.since
C.before
D.after
骨折达到骨性愈合,一般需要()。
A.8~10周
B.8~12周
C.10~12周
D.12~14周
E.14~16周