在项目决策时，既要考虑制定更加精细计划所增加的成本，也要考虑这样会减少以后的实施成本。
查看答案
Which statement is not right about diphtheria bacilli ?
A. It is Gram positive,
B. They contain metachromatic granules ;
C. They are anrranged in Y letter,
D. They have endospore,
Which medium is used for cultivation of C. diphtheria ?
A. Loffler’s medium
Bloody agar plate;
Chocolate plate;
D. TCBS plate;
Which statement is right about role of gene transfer in toxin of diphtheria bacilli ?
A. acquired by transformation,
B. acquired by conjugation
C. Acquired by lysogenic conversion;
D. acquired by transduction;
微信支付 
支付宝支付