…李教授在考察日记中写道：“今天，天昏地暗，吹着强劲的东风，气温在－40℃。这时，在我的家乡珠江三角洲，早稻正在收割。”日记中记述的这天，李教授可能在（） 撒哈拉沙漠。 喜马拉雅山。 北极地区。 南极地区。
营销人员应具备哪些素质？
When the chief engineer is in the machinery spaces, the officer in charge of the engineering watch shall（） continue to be responsible for machinery space operations despite the presence of the CE。 hand over the responsibility actively。 be responsible for the watching together with the chief engineer。 assistant the chief engineer to control the machinery。
市场调研应考虑哪些因素？
The main purpose of port State control is not to（） prevent an unsafe ship proceeding to sea。 prevent a ship threatening the marine environment。 fine the ships。 confirm a safe sailing。
Which of the followings is not an indication of a bad maintenance?（）
