离心泵中Y型泵为()。
A.单级单吸清水泵
B.多级清水泵
C.耐腐蚀泵
D.油泵
参考答案:D
李先生,32岁,因畏寒、发热、厌油、恶心呕吐、食欲不振、乏力就诊,诊断为甲型肝炎,收入院治疗
对该病人应采用哪种隔离
A.严密隔离
B.肠道隔离
C.呼吸道隔离
D.接触性隔离
E.保护性隔离
Our school has a big library. There are about ten books in it.
A.thousand
B.thousands
C.thousand of
D.thousands of