细菌在半固体培养基生长时,可看到细菌只沿穿刺线生长,请问此细菌可能是()
A.单毛菌
B.双毛菌
C.丛毛菌
D.周毛菌
E.无鞭毛的细菌
参考答案:E
Developing the project schedule is often an iterative process. It determines the planned start and finish dates for project activities and milestones. Schedule development can require the review and revision of duration estimates and resource estimates to create an approved project schedule that can serve as a baseline to (75) progress.
A.analyze
B.track
C.level
D.extend
吸油引射泵的作用不包括()
A.将通气油箱内的燃油引射回后传输活门处;
B.将外油箱内的燃油引射到后传输活门处;
C.将中央油箱内的燃油引射到后传输活门处。