矿业工程无论井上或井下,都必须制定有经批准的防火措施,且都必须设詈()。
A.消防系统
B.消防栓
C.消防水池
D.消防管路
参考答案:A
嗜铬细胞瘤高血压发作时的病人,以下哪种表现最不典型
A.心动过速伴有心绞痛发作
B.皮肤苍白及四肢冰凉
C.高血糖
D.血白细胞增多
E.尿常规异常
The old man was so angry and spoke so fast that none of his children understood ____ he said meant.
A.that, that
B.what. what
C.what
D.that