CRAC Class C (2025) — Questions 331–340

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U0327. The meaning of the amateur-radio abbreviation "NW" is:

业余无线电通信缩语"NW"的意思是：

Exam tips · 考试提示

NW is the abbreviation for "now." New is NW? — no, new is usually "NEW"; "not working" would be expressed differently; "you and me" is not NW — so A is correct.

U0328. During contacts, we sometimes call the other operator "old man." This likens the other party to a close comrade — meaning "old friend" or "old buddy," with no relation to age. The abbreviation for this term of address is:

通联时，我们有时称对方电台的操作员为"old man"。这是将 对方比作亲密无间的队友，因此为"老朋友"、"老伙计"之意且 无关年龄。这个称呼的缩语是：

Exam tips · 考试提示

OM is the abbreviation for "Old Man," a friendly term of address for a fellow amateur (old friend/buddy), unrelated to age. OB, OC, and OT are not the standard "old man" abbreviation.

U0329. The abbreviation for "operator" is:

"操作员"的缩语是：

Exam tips · 考试提示

"操作员" (operator) is abbreviated OP. OM means "old man," OOP and OHM are not the standard operator abbreviation — so A is correct.

U0330. In daily CW (continuous wave) contacts, appropriately using imperative sentences that include the word "please" (请) can liven up the contact atmosphere. The abbreviation for "please" is:

在CW日常通联中，适当使用带"请"字的祈使句可以活跃通联气 氛。"请"的缩语是：

Exam tips · 考试提示

"请" is abbreviated as PSE (from "please") or PLS in Morse/telegraphy abbreviations. B lists digital-mode terms (PSK, ASK), C lists unrelated tokens, and D lists PWR (power) and PTT (push-to-talk) — none mean "please".

U0331. Similar to "QSL", if you have completely copied the message sent by the other station, we often start a new exchange with the opening word "Roger" to proactively convey acknowledgement. The abbreviation for "Roger" is:

与"QSL"类似，如果完全抄收了对方所发的消息，我们常以起 始语"Roger"开启新的会话。这可向对方主动传达确认之 意。"Roger"的缩语是：

Exam tips · 考试提示

"Roger" is abbreviated simply as R, meaning "received and understood". RX means receiver, RIG means the station/equipment, and RFI means radio-frequency interference — none is the abbreviation for "Roger".

U0332. In the amateur radio service, the meaning of "SAE" is:

业余无线电业务中，"SAE"的含义为：

Exam tips · 考试提示

SAE stands for "self-addressed envelope" — an envelope with the recipient's (your own) address already written, which you include when requesting a QSL card. A is correct; B is just "envelope" (too vague), while C and D are unrelated instructions.

U0333. When amateur radio operators mail QSL cards, they often mention the abbreviation "SASE", whose meaning is:

业余无线电爱好者寄送QSL卡片时常会提及缩语"SASE"，其含 义为：

Exam tips · 考试提示

SASE means "self-addressed stamped envelope" — an envelope with your address written and postage attached, which you enclose so the other station can return a QSL. B is an IRC (a different item), while C/D are unrelated instructions.

U0334. In a contact, if you need to correct content you just sent wrongly, you usually start the exchange with "sorry"; the abbreviation is:

在通联中，如需更正刚才发错的内容，我们通常以"抱歉"开启 会话，缩语为：

Exam tips · 考试提示

"抱歉" is abbreviated SRI (from "sorry"). SNR means signal-to- noise ratio, STN means station, and SMS is the mobile texting term — none means "sorry".

U0335. The abbreviation for "temperature" (温度) is:

"温度"的缩语是：

Exam tips · 考试提示

"温度" is abbreviated TEMP. TMPO means tempo (speed), TUNE means to tune, and WX means weather — none means temperature.

U0336. The abbreviation for "thank you" (谢谢) is:

"谢谢"的缩语是：

Exam tips · 考试提示

"谢谢" is abbreviated TNX or TKS. SRI/SAE mean sorry/self- addressed envelope, CU/GB mean "see you"/"goodbye", and TVI/RFI mean television/interference — none means thank you.