职称英语考试

【单选题】The machine must be operated (by hand). It isn’’t automatiC、
A、mentally
B．annually
C．manually
D．heavily

网考网参考答案：C
网考网解析：
by hand adv．用手，manually adv．用手；这两个词含义最接近。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>