管路系统的特性曲线是随着()的增加而上升。
A、流量
B、扬程
C、轴功率
D、效率
参考答案:A
CK-MB检查正常的可疑急性冠脉综合征患者,判断其有否微小心肌损伤的最特异性的指标是()
A.CK-MB
B.Mb
C.BNP
D.LDH
E.cTn
All of the following records are usually maintained by the watch-standing officers aboard a vessel except the().
A.deck logbook
B.official logbook
C.compass record book
D.chronometer error book