题目内容

What is sight reading?

A. an easier way to play
B. a musical test

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What does she enjoy more?

A. the piano
B. the violin

What does she do at Guides?

A. outdoor activities
B. swimming

What are joggers?

A. sports trousers
B. sports shoes

An actual result is analysed in relation to a plan or standard.Which element of a feedback system performs this role?

A. Effector
B. High-level controller
Comparator
D. Sensor