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题目：
单选题
A脑脊液细胞计数和生化检查
B结核菌素试验强阳性
C脑脊液中找到结核菌
D结核中毒症状
E胸片X线检查
答案：
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管道下载时应尽量一次连续收油，不要间断地分几次收油，否则会因油品的不断蒸发使大呼吸损耗增加（）
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（）是评价基金运作效率和运作成本的一个重要统计指标。
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不属于采样的3个基本要素的是（）。
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回答题: Exercise Being Good or BadCan exercise be a bad thing? Sudden death during or soon after strenuous exertion on the squash court or on the army training grounds, is not unheard of. 51 trained marathon runners are not immune to fatal heart attacks. But no one knows just 52 common these sudden deaths linked to exercise are. The registration andinvestigation of such 53 is very patchy; only a national survey could determine the true 54 of sudden deaths in sports. But the climate of medical opinion is shifting in 55 of exercise, for the person recovering from a heart attack as 56 as the average lazy individual. Training can help the victim of a heart attack bylowering the 57 of oxygen the heart needs at any given level of work 58 the patient can do more before reaching the point where chest pains indicate a heart starved of oxygen. The question is, should middle-aged people, 59 .particular, be screened for signs of heart disease before 60 vigorous exercise?Most cases of sudden death in sport are caused by lethal arrhythmias in the beating of the heart, often in people 61 undiagnosed coronary heart disease. In North America 62 over 35 is advised to have a physical check-up and even an exercise electrocardiogram. The British, on the whole, think all this testing isunnecessary. Not many people die from exercise, 63 , and ECGs ( 心电图 ) are notoriously inaccurate. However, two medical cardiologists at the Victoria Infirmary in Glasgow, advocate screening by exercise ECG for people over 40, or younger people 64 at risk of developing coronary heart disease. Individuals showing a particular abnormality in their ECGs 65 , they say, a 10 to 20 times greater risk of subsequently developing signs of coronary heart disease, or of sudden death.第51题应选：
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简述初唐诗歌的中心任务？
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拍合照时应注意哪个问题（）
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《联合国海洋法公约》所称正常基线：除本公约另有规定外，测算领海宽度的正常基线是沿海国官方承认的大比例尺海图所标明的沿岸（）。
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Y441-114封隔器坐封时，地面操作需要（）。
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厚薄不均的工件淬火时，先淬（）部分，以免开裂。
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