In the A, B, C, D and F grading system, the first four letters are typically considered passing grades.

在 A、B、C、D 和 F 评分体系中，前四个字母通常被认为是及格。

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8K stripe size RA-WT (write ahead/write-through) cache (C: for OS; D: for Utils; E: for Scanmail quarantine; F: for Domino files and data)

8K stripe size RA-WT (write ahead/write-through) 缓存（C：用于 OS；D：用于实用程序；E：用于Scanmail 隔离；F：用于 Domino 文件和数据）

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Figure 3: Performance TAB shows you a letter grade (a, b, c, d, f) and a percent grade (1-100).

图3：性能标签使用字母(A, B, C, D, F)表示等级以及当前等级(1 - 100)。

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He composed it for the opening of the John F.Kennedy Center for the Performing Arts in Washington,D.C., in nineteen seventy-one.

VOA: special.2009.08.02

So they began to call this A and this B and this C and this D and this E, this F, this G.

他们开始把这叫做A,B和C,这个是D,E,F,G

耶鲁公开课 - 聆听音乐课程节选

We got to go C, D, some kind of E, F.

而是C,D,某种E,F

耶鲁公开课 - 聆听音乐课程节选

Mr. Blake derived a simple melody by playing a few dozen digits of pi using a C-major scale, with 3, 1, 4, 1, 5, 9 translated to the notes E, C, F, C, G, D and so on.

WSJ: We Can All Have a Slice of Pi | Postmodern Times by Eric Felten

Basically, 44% of the hospitals reviewed were given a C, D or F.

FORBES: Move up http://i.forbesimg.com t Move down

The durable body is resistant to impacts and dropping, and a Class 1, Division 1, Groups C, D, F UL approval assures safe and compliant operation.

ENGADGET: Explosion-proof flashlight could be the first to outlive its owner