各式构件起线、割角、拼缝达到合格的条件是（）
A、起线顺直
B、割角准确
C、拼缝严密
D、无胶迹
参考答案：A, B
—_____ behind the door?
—No, they aren't. [ ]
A. Where are
B. What's
C. Are those keys
D. Is the key
遵守职业道德有利于职工与领导之间协调关系。
