（）是用电缆将地层测试器送到井下的预定深度，由地面仪器控制进行测试。
参考答案：电缆测试
计算（-1）2的值等于（ ）
A．-1
B．1
C．-2
D．2
The freight forwarder was an agent performing on behalf of the ( ) routine test such as loading of goods．
A．carrier
B．custom
C．port authorities
D．exporter
