物料装车完成后,必须用不小于直径()的钢丝绳捆绑牢靠。
A、12.5mm
B、18.5mm
C、9.3mm
D、15.5mm
参考答案:D
用所给词的适当形式填空。
1. He (go) to a park yesterday.
2. I (clean) my room last weekend.
3. I usually (wash) my clothes on Sundays.
4. Did you (watch) TV yesterday?
5. Mike (do) his homework yesterday.
()是人类农业社会出现的标志。
A.驯化动物
B.粮食种植
C.定居生活
D.以上都对