十二指肠球部溃疡
A．瘀点B．充血性皮疹C．瘀斑D．血肿E．小红痣
参考答案：B
The young couple, who returned my lost wallet, left _______ I could ask for their names.
A．while
B．before
C．after
D．since
JJG（电力）01-1994《电测量变送器检定规程》适用于哪些范围？
