对已存入出口监管仓库因质量等原因要求更换的货物出仓前,更换货物应当先行入仓。
参考答案:对
— He is crazy about computer games.
— It isn't surprising _______ he isn't doing well in his study recently. [ ]
A. whether
B. that
C. why
D. what
在脚手架使用期,严禁拆除下列杆件()。
A、主节点处的纵、横向水平杆
B、纵、横向扫地杆
C、连墙件
D、斜撑杆