定义变量生命周期最长的是()。
A.匿名块变量
B.涵数参数
C.宿主变量
D.包变量
参考答案:C
Tina didn't finish her homework. It made the teacher _____ . [ ]
A. happy
B. angry
C. relaxed
D. sleepy
高压阀指工称压力为()的阀门。
A.1Mpa
B.10Mpa
C.10.0Mpa~80.0Mpa
D.100Mpa