In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because().
A. shock loading on the tow line is reduce
B. towing speed is improved
C. the vessel is more visible from the tug
D. the catenary of the tow line is reduced
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乳品中蛋白质数量最多的一类蛋白质是()。
A. 乳清蛋白
B. 酪蛋白
C. 膜蛋白
D. 免疫球蛋白
人身权是一种自然权利,不可转让也不可放弃。
A. 正确
B. 错误