工人申请职业健康检查的前提条件是（）
A.有一段工作经历
B.本人自愿申请
C.单位愿意支付费用
D.有明确的接触职业危害的工作史
参考答案：D
Cindy , who went to university last month, spent 1000yuan more than she___for living
expenses.
A will plan B had planed C would plan D has planed
气缸体各曲轴主轴承孔圆柱度误差应不大于（）mm。
A.0.15
B.0.015
C.0.025
D.0.25
