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问题 单项选择题 A1/A2型题

关于进动频率的叙述，正确的是（）

A.与自旋频率成正比

B.与梯度场及场强成正比

C.与磁旋比成反比

D.与主磁场的场强成正比

E.以上都正确

答案

参考答案：D

填空题

单词拼写。

1. It is the s  ____   the two trucks collided.

2. Although Bill was going to the movies, he told Jack to the c____.

3. Do you remember the s_____in the play where Susan meets Alan for the first time?

4. In order to keep his money safe,  he opened an _____( 帐户)with the bank.

5. With nothing to do, he just ____ ( 漫步) aboutevery day.
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单项选择题 A1/A2型题

胆固醇含量最高的脂蛋白是（）.

A.乳糜微粒

B.极低密度脂蛋白

C.中间密度脂蛋白

D.低密度脂蛋白

E.高密度脂蛋白
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