在将车辆换入()前,一定要确保车辆已完全停稳。
A、"N"空档
B、倒档
C、低档
D、高档
参考答案:B
Having failed in many attempts,the bird _____managed to escape from the cage.
A.suddenly
B.naturally
C.immediately
D.eventually
用于休克及急性肾衰的药物是
A.肾上腺素
B.多巴胺
C.异丙肾上腺素
D.去甲肾上腺素
E.间羟胺