轻烃系统计量泵启动时,不加压慢慢调大行程,但不要急剧增大,直到()为止,此时检查各部位是都正常。
A.20%
B.50%
C.100%
D.200%
参考答案:C
–What’s his phone number?
-_______ 257-6890.
A.Its
B.That’s
C.It’s
D.His
临床上不引起便血的肛肠疾病是:()
A.内痔
B.肛裂
C.直肠脱垂
D.肛瘘
E.血栓外痔