如果要长时间测量900—1300℃温度时，应选用（）热电偶。
A、镍铬-镍硅
B、镍铬-考铜
C、铂铑-铂
D、铜-康铜
参考答案：C
He moved away from his parents and missed them ________enjoy the exciting life in China.
A．too much to
B．very much to
C．enough to
D．much so as to
下列碱中，属于有机碱都是（）
A.联氨
B.甲胺
C.烧碱
D.氢氧化镁
