严重缺水时，如果＿就可能导致锅炉爆炸。
A.立即叫水
B.立即上水
C.立即停炉
D.立即排污
参考答案：B
,Mother will wait for him to have dinner together.
A．However late is he
B．However he is late
C．However is he late
D．However late he is
新生儿硬肿症的临床表现有()
A．反应差，哭声低微
B．体温不升
C．皮下脂肪积聚部位硬肿
D．常合并肺炎，败血症
E．心音低钝
