具有灵敏度高,不受环境温度的变化而影响其灵敏度的特性,适用于起居处所和机器处所的深测器是:
A、定温式
B、差温式
C、差定温式
D、电子定温式
参考答案:C
奇数个负数相乘,结果的符号是______.(填“正”或“负”)
He told me that he wanted to buy his daughter a new bag as her old onehas been stolen.
A B C D