肾损伤最常见的症状是()
A.疼痛
B.肿块
C.血尿
D.休克
E.感染
参考答案:C
I had hoped to take a holiday this year but I wasn’t able to ______.
A.get away
B.drop in
C.check out
D.hold on
用8位补码表示整数—126的机器码,算术右移一位后的结果是()。
A.10000001
B.01000001
C.11000001
D.11000010