Tension within a family is often relieved or eliminated when the family as a whole is threatened by ____ force.
A: internal
B: external
C: intensive
D: extensive
A: internal
B: external
C: intensive
D: extensive
举一反三
- Sam was the ______________ expert for the whole family already when he was very young.
- According to Mr. Davis, when will the whole family get together at one house for dinner?
- The whole family was there for this big family reunion. A: 团结 B: 再见 C: 团聚 D: 聚餐
- The internal force of any structure is zero if it is not subjected to external loads.
- When two two-terminal networks are equivalent, they are equivalent to ( ). A: external circuit B: internal circuit C: external circuit and internal circuit D: neither external circuit nor internal circuit