肠鸣音增强见于
A．食管炎B．急性肠炎C．胃溃疡D．十二指肠溃疡E．直肠癌
参考答案：B
Forty-five fathoms is marked on the anchor chain by（）.
A.one turn of wire on the first stud from each side of the detachable link
B.two turns of wire on the second stud from each side of the detachable link
C.three turns of wire on the third stud from each side of the detachable link
D.four turns of wire on the fourth stud from each side of the detachable link
