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【单选题】
针对某些体能应加强锻炼，在体质健康测试中相关的成绩就会得到提高，下列说法正确的是（） ①计时跑、摆臂练习、弓箭步走可以有效提高50米成绩 ②负重蹲起、俯卧撑等练习可以有效提高实心球成绩 ③跨步跳、单脚跳能增强下肢力量可以有效提高台阶试验成绩 ④越野跑、有氧健身操可有效提高1000米或者800米成绩A.
①②③
B.
①③④
C.
②③④
D.
①②④
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【单选题】In which of the listed hydraulic systems will the installation of an oil cooler be necessary?
A.
Constant tension mooring winch system
B.
Hatch cover system
C.
Watertight door system
D.
Internal combustion engine hydraulic starter system
【单选题】Which of the following is the defect of fishmeal?
A.
It doesn’t contain much protein necessary for fish.
B.
It is not so easily developed as the plant alternatives.
C.
It creates serious phosphorous pollution.
D.
It is not as diverse as the plant alternatives.
【单选题】One fine afternoon I was walking along Fifth Street, when I remembered that it was necessary to buy a pair of socks. Why I wished to buy only one pair is unimportant. I turned into the first sock shop...
A.
A pair of shoes.
B.
A pair of socks.
C.
Two pairs of shoes.
D.
Two pairs of socks.
【单选题】According to the passage, the function of the office manager is to ______
A.
provide necessary information for the local authority
B.
keep a balance between production, marketing and administration
C.
assist management in making appropriate decisions quickly
D.
make sure that administrative work is performed efficiently
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