YJ17供料系统除梗机构调整时（）方向转动两个螺钉以降下挡板。
参考答案：逆时针
Don't worry. Jim is quite used to _____ in such busy streets as this.[ ]
A. drive
B. be driving
C. have driven
D. driving
基金管理人应当自收到投资者的申购(认购)、赎回申请之日起( )个工作日内，对该申购(认购)、赎回申请的有效性进行确认。
A．2 B．3 C．5 D．7
