上导瓦抗重螺栓的头部为()面
A、斜
B、平
C、球
D、锥
参考答案:C
—What happened _______ you? You don't look fine.
—I have a cold.[ ]
A. in
B. on
C. from
D. to
跨境贸易人民币收款可直接转入客户().
A.人民币账户
B.外币账户
C.待核查账户
D.美元账户