二氧化碳灭火剂适用于扑救()火灾。
(A)金属钾
(B)金属钠
(C)精密仪器
(D)硝酸纤维
参考答案:C
Convenience Travel Corp.'s financial information for the year ended December 31, 2004 included the following:
A.Property Plant & Equipment
B.$15000000
C.Accumulated Depreciation
D.$ 9000000
用气提泵提升回流污泥时,一般空气压力应大于浸没度()以上。
A.20cm
B.30cm
C.40cm
D.50cm