下井仪器拆装要使用专用工具及支架，仪器拆卸后，应及时擦净螺纹套并涂（），然后上（）。
参考答案：丝扣油；“O”圈油
语音语调属于非语言传播技巧中的（）
A.动态体语
B.静态体语
C.仪表形象
D.同类语言
E.异类语言
用 come about, happen, take place, break out, occur 的正确形式填空
①I was out of town at the time, so I don't know exactly how it ________.
②The meeting _________ at 8:00 as planned.
③It ________ to rain that morning.
④A fire ________ in the hotel last night.
⑤It suddenly _________ to me that I ha left my key in the office.
