起重机在吊运过程中设备发生故障时应发出警告信号。
参考答案：对
Advertising can influence consumers’ moods, ______, in turn, can influence consumers’ reactions to products．
A．that
B．which
C．where
D．when
对于类风湿关节炎下列哪项是正确的
A．局部性疾病B．关节炎性改变C．多表现在大关节D．多呈非对称性E．病程自限
