第一信号系统（first signal system)

A、classic conditioned reflex

B、operant conditioned reflex

C、first signal system

D、second signal system

A、above all

B、first and foremost

C、at the outset

D、to start from

r-taken has to take action to permit safe passing， the vessel intending to overtake shall indicate her intention by sounding appropriate signal． This means that ________ ．

A.the vessel to be overtaken shall sound appropriate signal first

B.the overtaking vessel shall sound appropriate signal first

C.the overtaking vessel shall take action to permit safe passing

D.the vessel to be overtaken shall take action to permit safe passing before hearing appropriate signal

A、具有first signal system和second signal system

B、对环境变化具有更大的适应性

C、具有建立conditioned reflex的能力

D、具有对具体信号形成conditioned reflex的能力

A、prepares the reader for the later event

B、casts a dark shadow over the story

C、shapes the structure of the story development

D、gives a signal that something great is to occur

A、Nervous system and digestive system

B、Endocrine system and respiratory System

C、Nervous system and endocrine system

D、Central nervous system and peripheral nervous system

E、The first messenger system and the second messenger system

A、Nervous system and endocrine system

B、Nervous system and digestive system

C、Endocrine system and respiratory System

D、Central nervous system and peripheral nervous system

E、The first messenger system and the second messenger system

A. Both devices stop transmiting, wait a random period of time, verify the wire is idle, and re-transmit

B. The device with the lowest MAC address is permitted to retrannsmit first

C. The device with the lowest MAC address sends a jam signal to notify all other devices of the collision

D. Both devices send a jam signal to notify all other devices of the collision

A、Keep in mind at all times what you are searching for.

B、Do not read every word.

C、Learn to spot dates, statistics and other numbers.

D、Look for signal words such as first, second, next, etc.

E、Look for repeated key words or structure.

A stand-on vessel is ______.

A.required to give way in a crossing situation

B.required to sound the first passing signal in a meeting situation

C.free to maneuver in any crossing or meeting situation as it has the right-of-way

D.required to maintain course and speed in a crossing situation but may take action to avoid collision