急性白血病患者,出现头痛,恶心呕吐,脑脊液压力增高,蛋白质增多,细胞大多为白血病细胞。鞘内注射首选药物为()
A. 环磷酰胺
B. 三尖杉酯碱
C. 长春新碱
D. 甲氨蝶呤
E. 6-巯基嘌呤
After conducting an abandonment drill,the Master or person in charge of a ship shall log().
A. the names of crew members who participated in the drill
B. the length of time that each motor propelled lifeboat was operated in the drill
C. the length of time the lifeboat was in the water
D. the time it took to lower the boat
救援船对难船进行救援时,也可使用抛绳设备在两船之间建立连接钢丝绳,然后利用滑车、救生设备和往返牵引索等救援难船上的人员或向它提供有关的设备物资。()
A. 正确
B. 错误
Aluminum lifeboats are subject to damage by electrolytic corrosion (the aluminum being eaten away). In working around boats of aluminum you must be very careful().
A. to keep the boats covered at all times
B. not to leave steel or iron tools lying in or near these boats
C. to keep an electric charge on the hull at all times
D. to rinse these boats regularly with salt water