（）土壤水分测试仪包括时域反射仪（TDR）、频率反射仪（FDR）、驻波仪（SWR）等。
A、探针式
B、烘干法
C、取样法
D、称量法
参考答案：A
用am，is，are填空
1. What _____ those? _____ they birds?
2. He _____ my friend. _____ your friend a boy or a girl?
3. This _____ his ruler. Where _____ my ruler?
4. I _____ in Class Three. _____ you in Class Three,too?
5. Those _____ their apples. Where _____ his apples?
乘机旅客对随身携带的液态物品如何处理？
