题目内容
(请给出正确答案)
提问人:网友wangchuangx
发布时间:2022-01-06
[主观题]
The reporting of balance of payments statistics covers all economic transactions between C
hinese residents and non-residents.
简答题官方参考答案
(由简答题聘请的专业题库老师提供的解答)
查看官方参考答案
Bal 31核酸酶(Bal 31 nuclease)是Ca2+依赖性的,在反应混合物中加入EDTA便可抑制它的活性。
A.PBS>103CFU/ml、BAL>104CFU/ml
B.PBS>104CFU/ml、BAL>103CFU/ml
C.PBS<103CFU/ml、BAL>104CFU/ml
D.PBS>105CFU/ml、BAL>105CFU/ml
E.PBS>105CFU/ml、BAL>104CFU/ml
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