6. contact A: the state of talking or speaking B: the state of acting C: the state of communicating or meeting D: the state of laughing

Why does the existence of intermediate state in the 4-level laser can promote the production of laser beam? A: reach population inversion between ground state and metastable state B: reach population inversion between ground state and intermediate state C: reach population inversion between ground state and pumped state D: reach population inversion between intermediate state and metastable state

When the initial state and the final state are fixed, "the sum of work and heat" is the state function.

Which of the following state is not slave-holding state in 1860?

Where was Confucius born？（ ） A: Qin State B: YanState C: Lu State D: Qi State

A．touch/var/state/dhcp/dhcpd.leases B．address/var/state/dhcp/dhcpd.leases C．nat/var/state/dhcp/dhcpd.leases D．resolve/var/state/dhcp/dhcpd.leases

配置机器人外部I/O信号，可以实现外部信号控制伺服使能的是（ ）。 A: iPRG_LOAD B: iENABLE C: oENABLE_STATE D: oPRG_READY

amnesia A: a state of losing one’s memory B: a state of feeling sad C: a state of feeling betrayed

When<br/>the substance is measured by atomic absorption spectrophotometry, the<br/>state of the substance is ( ) A: Solid<br/>state B: Liquid C: Vapor<br/>state D: Supercritical<br/>state

Constatives are sentences that did not state a fact or describe a state, and are not verifiable.