洗选厂应当制定事故应急救援预案,建立应急救援组织,不需要配备救护器材,统一配备即可。
参考答案:错
After the Asian Games, ______ people came to Guangzhou for a visit during holidays. [ ]
A. thousand
B. thousands of
C. five thousands
D. five thousands of
被子植物名称的由来,主要是它的胚珠包藏在下列哪一结构内()。
A.子房壁
B.枝头
C.花粉管
D.种子