关于钩体病一般肺出血型的临床表现错误的说法是
A.无明显呼吸循环功能障碍
B.病情常迁延难愈
C.咳嗽、痰中带血
D.肺部可有少量湿罗音
E.X线检查可见小片状阴影
参考答案:B
()必须依法参加工伤社会保险。
A、劳动者
B、各级政府
C、用人单位
The number of teachers in our school _______ greatly increased last term.A number of teachers in this school ______from the countryside.
A.was;is
B.was;are
C.were;are
D.were;is