我国小儿医疗机构基本分为________________________、______________________、________________________等3类。
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企业发出各种材料应负担的成本差异可按当月成本差异率计算,若发出的材料在发出时就要确定其实际成本,则也可按上月成本差异率计算。()
A. 正确
B. 错误
DBS3036可支持多种加解密方式,其中最多可支持()加解密。
A5/1、A5/3
B. A5/2、A5/3
C. A5/1、A5/2
D. A5/1、A5/2和A5/3
This growth,()mainly in Southeast Asia and Africa, has dramatic consequences.
A. happens
B. which is happening
C. which happening
D. which happened