何谓破坏备用?
参考答案:
设备不经检修已不能投入运行或设备本身虽备用,但其它设备工作影响其投入运行。
Who did the English teacher, as well as the monitor, _________ an article for the wall newspaper?.
A.has written
B.write
C.have write
D.have written
高钾血症常见的临床表现是()。
A.心动过缓
B.肠蠕动消失
C.四肢肌张力增强
D.恶心,呕吐
E.腹胀法