排水作业人员必须遵守考勤制度，对于违反者必须百分之百的处理。
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外周静脉短导管的尖部位于（）
A. 上腔静脉的下1/3到上腔静脉与右心房的连接处
B. 颈外静脉
C. 上腔静脉
D. 下腔静脉
E. 外周血管内部
Temporary Certificates of Inspection are effective until the（）.
A. SOLAS Certificate is issued
B. Loadline Certificate is renewed
C. classification society approval is issued
D. permanent Certificate of Inspection is issued
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