测量氧气时,压力表严禁沾有油脂,以免着火,甚至爆炸
错误
暂无解析
Turnoverrate
-----Dad,lookatthebuilding.Itisonfire.
-----Call119____________mobilephonerightnow
Shonasaysthatinherquestionnaireheraimwas____.
Annualleave
Thereisamixtureofpeoplefromdifferentculturesandethnicgroupsinacountry.Why?Isthisapositiveornegativedevelopment?